Search the Community: Showing results for tags 'trilobite'.

More search options

  • Search By Tags

    Type tags separated by commas.
    Tags should be keywords or key phrases. e.g. carcharodon, pliocene, cypresshead formation, florida.
  • Search By Author

Content Type


  • Fossil Discussion
    • General Fossil Discussion
    • Fossil Hunting Trips
    • Fossil ID
    • Is It Real? How to Recognize Fossil Fabrications
    • Partners in Paleontology - Member Contributions to Science
    • Questions & Answers
    • Fossil of the Month
    • Member Collections
    • A Trip to the Museum
    • Paleo Re-creations
    • Collecting Gear
    • Fossil Preparation
    • Member Fossil Trades Bulletin Board
    • Member-to-Member Fossil Sales
    • Fossil News
  • Fossil Sites
    • Africa
    • Asia
    • Australia - New Zealand
    • Canada
    • Europe
    • Middle East
    • South America
    • United States
  • Fossil Media
    • Members Websites
    • Fossils On The Web
    • Fossil Photography
    • Fossil Literature
    • Documents


  • Anson's Blog
  • Mudding Around
  • Nicholas' Blog
  • dinosaur50's Blog
  • Traviscounty's Blog
  • Seldom's Blog
  • tracer's tidbits
  • Sacredsin's Blog
  • fossilfacetheprospector's Blog
  • jax world
  • echinoman's Blog
  • Ammonoidea
  • Traviscounty's Blog
  • brsr0131's Blog
  • brsr0131's Blog
  • Adventures with a Paddle
  • Caveat emptor
  • -------
  • Fig Rocks' Blog
  • placoderms
  • mosasaurs
  • ozzyrules244's Blog
  • Sir Knightia's Blog
  • Terry Dactyll's Blog
  • shakinchevy2008's Blog
  • MaHa's Blog
  • Stratio's Blog
  • Phoenixflood's Blog
  • Brett Breakin' Rocks' Blog
  • Seattleguy's Blog
  • jkfoam's Blog
  • Erwan's Blog
  • Erwan's Blog
  • Lindsey's Blog
  • marksfossils' Blog
  • ibanda89's Blog
  • Liberty's Blog
  • Liberty's Blog
  • Back of Beyond
  • St. Johns River Shark Teeth/Florida
  • Ameenah's Blog
  • gordon's Blog
  • West4me's Blog
  • West4me's Blog
  • michigantim's Blog
  • michigantim's Blog
  • lauraharp's Blog
  • lauraharp's Blog
  • micropterus101's Blog
  • micropterus101's Blog
  • GPeach129's Blog
  • nicciann's Blog
  • Olenellus' Blog
  • nicciann's Blog
  • maybe a nest fossil?
  • Deep-Thinker's Blog
  • Deep-Thinker's Blog
  • bear-dog's Blog
  • javidal's Blog
  • Digging America
  • John Sun's Blog
  • John Sun's Blog
  • Ravsiden's Blog
  • Jurassic park
  • The Hunt for Fossils
  • The Fury's Grand Blog
  • julie's ??
  • Hunt'n 'odonts!
  • falcondob's Blog
  • Monkeyfuss' Blog
  • cyndy's Blog
  • pattyf's Blog
  • pattyf's Blog
  • chrisf's Blog
  • chrisf's Blog
  • nola's Blog
  • mercyrcfans88's Blog
  • Emily's PRI Adventure
  • trilobite guy's Blog
  • xenacanthus' Blog
  • barnes' Blog
  • HeritageFossils' Blog
  • Fossilefinder's Blog
  • Fossilefinder's Blog
  • Emily's MotE Adventure
  • farfarawy's Blog
  • Microfossil Mania!
  • A Novice Geologist
  • Southern Comfort
  • Eli's Blog
  • andreas' Blog
  • Stocksdale's Blog
  • fossilman7's Blog
  • Hey Everyone :P
  • fossil maniac's Blog
  • Piranha Blog
  • xonenine's blog
  • Fossil collecting and SAFETY
  • Detrius
  • pangeaman's Blog
  • pangeaman's Blog
  • pangeaman's Blog
  • Jocky's Blog
  • Jocky's Blog
  • Kehbe's Kwips
  • RomanK's Blog
  • Prehistoric Planet Trilogy
  • mikeymig's Blog
  • Western NY Explorer's Blog
  • VisionXray23's Blog
  • Carcharodontosaurus' Blog
  • What is the largest dragonfly fossil? What are the top contenders?
  • Hihimanu Hale
  • Test Blog
  • jsnrice's blog
  • Lise MacFadden's Poetry Blog
  • BluffCountryFossils Adventure Blog
  • meadow's Blog
  • Makeing The Unlikley Happen
  • KansasFossilHunter's Blog
  • DarrenElliot's Blog
  • jesus' Blog
  • A Mesozoic Mosaic
  • Dinosaur comic
  • Zookeeperfossils
  • Cameronballislife31's Blog
  • My Blog
  • TomKoss' Blog
  • Group Blog Test
  • Paleo Rantings of a Blockhead
  • Dead Dino is Art
  • The Amber Blog
  • TyrannosaurusRex's Facts
  • PaleoWilliam's Blog
  • The Paleo-Tourist
  • The Community Post
  • Lyndon D Agate Johnson's Blog
  • BRobinson7's Blog
  • Eastern NC Trip Reports
  • Toofuntahh's Blog
  • Pterodactyl's Blog
  • A Beginner's Foray into Fossiling
  • Micropaleontology blog
  • Pondering on Dinosaurs
  • Fossil Preparation Blog
  • On Dinosaurs and Media
  • cheney416's fossil story
  • jpc
  • Red-Headed Red-Neck Rock-Hound w/ My Trusty HellHound Cerberus
  • Red Headed


  • Calendar


  • Annelids
  • Arthropods
    • Crustaceans
    • Insects
    • Trilobites
    • Other Arthropods
  • Brachiopods
  • Cnidarians
    • Corals
  • Echinoderms
    • Crinoids & Blastoids
    • Echinoids
    • Other Echinoderms
  • Forams
  • Graptolites
  • Molluscs
    • Ammonoids & Nautiloids
    • Bivalves
    • Gastropods
    • Other Molluscs
  • Sponges
  • Other Invertebrates
  • Ichnofossils
  • Plants
  • Vertebrates
    • Amphibians & Reptiles
    • Birds
    • Dinosaurs
    • Bony Fishes
    • Mammals
    • Sharks & Rays
    • Other Vertebrates
  • Other Chordates

Found 568 results

  1. From the album Fossil Diagrams

  2. Hello, I am actualy working on a 3 D reconstruction of the Trilobite Triarthrus The body and my references as a blueprint :
  3. From the album Trilobites

    Taxonomy: Phalangocephalus dentatus (pygidia and one cranidium) Age: Lower Devonian Location: Trilobite Ridge- Montague, New Jersey (Port Jervis Formation, Tristates Group). Source: gift; collected by Tim Jones.
  4. From the album Trilobites

    Taxonomy: Eldredgeops rana (assortment - prone, semi-prone, enrolled) Age: Middle Devonian Location: (various: NY, Ontario) Source: Field collection Note: By far, the most abundantly common, and recognizable, trilobite of the Devonian. Over the years, I've probably amassed a ridiculous number of them.
  5. From the album Trilobites

    Taxonomy: Bellacartwrightia whiteleyi Age: Middle Devonian (Windom) Location: Blasdell, NY (Penn Dixie Quarry) Source: Field Collection
  6. From the album Trilobites

    Taxonomy: Greenops boothi Age: Middle Devonian (Windom) Location: Blasdell NY (Penn Dixie Quarry) Source: Field Collection
  7. We finally got a chance to make it to Penn Dixie this year. Met up with Jay and had a good time. I made a short video of some of our adventures. I'll be posting a bit more fossil pictures. The brother found several roller trilobites out of the matrix in full condition.
  8. @DevonianDigger found this beauty before @Kane could get to it! @Kaneworked hard to dig this slab out but @DevonianDigger cracked the slab open before he could! Hence the new phrase (after his name) is: You've been Jayed! @DevonianDigger didn't even know it was from his pile. What a find!
  9. Posted this without telling Jason .... so hopefully he is cool with me posting. Jason went on a trip to Penn Dixie with a group from the forum here over Easter and found some fossils that Jason thought might be worth prepping. I was invited to attend, but there was no getting away from the wife and family over Easter. That was just a non starter. Anyway for some reason or other he realized that some of the fossils he found were actually quite nice and I guess he probably heard from some of the people on the trip that I might be able to do something with them for him. Well after a flurry of PM's, he decided to risk sending some off, to some old geezer that he didn't know from a hole in the wall, way up in Canada.... lol. So he sent me a few to have a look at and after 4 days with Fedex they arrived safely yesterday... Big note to anyone out there ...... always use regular USPS to send fossils to Canada it is the least hassle and the least expensive way to do it. Jason learned a bit of a lesson by using Fedex. Based on a quick look he is going to have a few nice ones in what he sent me, including one potentially large complete and stunning greenops. It has the potential to be one of the better greenops that I have seen come out of Penn Dixie. As with all the really good ones from there, other than part of the pygidium poking out of the matrix it is buried. A bit of a shame the matrix broke right at the edge of the greenops but I guess if it hadn't he would never have seen it. As a result the very tip of one of the pygidial spines is broken of. I could fix that up but not sure if I will , will wait to see final look of the fossil. Using a scope I have already exposed enough to know that a significant amount of the greenops is there including little spines that are generally missing. If you find something like his greenops ........ do not try to do anything with it yourself .... don't even think about it. I have seen far to many spectacular specimens destroyed by someone who just couldn't wait. They just had to pick away to see what was under there. Please have someone experienced who knows what they are doing and who has the right equipment look at it. Fossils like this are rare and fragile, touch it wrong and you have destroyed it. Unfortunately for Jason two other greenops he thought might be good that he sent me are just pygidiums. To have found 3 complete greenops at Penn Dixie in one day is absolutely unheard of and that is even knowing the exact layer in which they are found. Anyway, grabbed one of the fossils at random, eldredgeops rana and here is a quick prep sequence. Prepped using ARO, Pferd and other airscribes and Comco air abrasion unit set at 30 PSI 40 micron dolomite under a Nikon scope. Used a Comco .018 purple high precision nozzle until near the very end when I switched to a .010. Here is a bad picture of the fossil before starting Here it is 15 minutes into prep Here it is 30 mins into prep
  10. From the album Trilobites

    Taxonomy: Pseudogygites latimarginatus (2/3 specimen and cephalon) Age: Ordovician (Trenton River Gp) Location: Ottawa, Canada Source: Field collection. Note: The likelihood of finding full specimens as opposed to hash plates of numerous moults is not high.
  11. From the album Trilobites

    Taxonomy: Greenops widderensis (three specimens) Age: Middle Devonian Location: Arkona, Ontario, Canada Source: Field Collection
  12. From the album Trilobites

    Taxonomy: Triarthrus eatoni Age: Ordovician Location: Ottawa, Canada Source: Field Collection
  13. From the album Trilobites

    Taxonomy: Flexicalymene ouzregui (two specimens) Age: Ordovician Location: Anti-Atlas Mtns, Morocco Source: Purchased
  14. From the album Trilobites

    Taxonomy: Anchiopsis anchiops (partial cephalon and pygidium) Age: Lower Devonian (Bois Blanc Fm) Location: London, Canada (imported fill from Niagara escarpment) Source: Field Collection
  15. Hello once again! Viola and I went to a new location for a little fossil-hunting this afternoon, and we think that she may have found a rough-looking trilobite - what do you think? We found it by Mimico Creek in Toronto (Georgian Bay Formation, Upper Ordovician). It's in a massive piece of rock so if it is indeed a trilobite then we'll have to find a way to cut the rock to save only her little treasure Thanks in advance! Monica
  16. I would like to introduce myself and my work. I grew up on a small farm in southwestern Ohio loaded with great locations for the collection of ordovician fossils. I earned my BA in geology and taught fro approximately 30 years. I retired from education in 2015 and have been working as a sculptor since. I do some animal and wildlife work, some fantasy sculptures and some paleontology themed pieces. I aways try to have my pieces looking and behaving in a lifelike and believable fashion as well as being technically accurate. My sculptures are created in clay, I then make rubber molds, cast a wax in the mold and then have the wax cast in bronze in a foundry. Sculpting in bronze is more expensive than resin but the material is strong and incredibly durable. I am currently working on another sculpture of a heteromorphic ammonite that I also need help with. Let me first attach sample of my sculptures to show you my work. Thank you.
  17. Any kid friendly fossil sites along interstate 40 n 75 that I can take my family for few hours? Just want to see what Tennessee got to offer. We are on vacation in South Carolina and will drive back to Wisconsin this weekend. We want to make few stops to stretch our legs as we don't want to drive all day. Any recommendations? I'll love to meet some of you guys and enjoy have boys looking for fossils. Older boy aged 6 really want to find his first trilobite.
  18. These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since April 21, 2017. Phylum Arthropoda Subphylum Trilobitomorpha Class Trilobita Cambrian Trilobites Africa/Middle East Ameri, H. (2013). Peri-Gondwana Late Early-Middle Cambrian trilobites from the Kuhbanan Formation in Dahu section, Kernan Province, Iran. Arab J. Geosci., 8(3). Ameri, H. and F. Zemani (2015). Biostratigraphy of the Peri-Gondwana Cambrian trilobite fauna (Northern Kernan, Iran) and correlation with other countries. Historical Biology, 28(3). Ameri, H. and M. Dastanpour (2010). Stratigraphy and Paleontology of Trilobites in Kuhbanan Formation in the Akbar-Abad Section (North of Kerman). Journal of Sciences, Islamic Republic of Iran, 21(1). Dean, W.T. (2006). Cambrian Stratigraphy and Trilobites of the Samur Dağ Area, South of Hakkâri, Southeastern Turkey. Turkish Journal of Earth Sciences, Vol.15. Dean, W.T. (2005). Trilobites from the Cal Tepe Formation (Cambrian), 1 Near Seydisahir, Central Taurides, Southwestern Turkey. Turkish Journal of Earth Sciences, Vol.14. Dean, W.T. and R. Krummenacher (1961). Cambrian Trilobites from the Amanos Mountains, Turkey. Palaeontology, Vol.4, Part 1. Elicki, O. and G. Geyer (2013). The Cambrian trilobites of Jordan: taxonomy, systematic and stratigraphic significance. Acta Geologica Polonica, Vol.63, Number 1. Antarctica Jago, J.B. and R.A. Cooper (2007). Middle Cambrian trilobites from Reilly Ridge, northern Victoria Land, Antarctica. Memoirs of the Association of Australasian Palaeontologists, 34. Liebermann, B.S. (2004). Revised Biostratigraphy, Systematics, and Paleobiogeography of the Trilobites from the Middle Cambrian Nelson Limestone, Antarctica. The University of Kansas Paleontological Contributions, Number 14. Palmer, A.R. and C.G. Gatehouse (1972). Early and Middle Cambrian Trilobites from Antarctica. U.S. Geological Survey, Professional Paper 456-D. Shergold, J.H. and R.A. Cooper (1985). Late Cambrian trilobites from the Mariner Group, northern Victoria Land, Antarctica. BMR Journal of Australian Geology & Geophysics, 9. Asia/Indonesia Dai, T. and X.-L. Zhang (2012). Ontogeny of the trilobite Estaingia sinensis (Chang) from the lower Cambrian of South China. Bulletin of Geosciences, 87(1). Jell, P.A. and N.C. Hughes (1997). Himalayan Cambrian Trilobites. Special Papers in Palaeontology, Number 58. Kobayashi, T. (1986). A Comparison of the Cambrian Trilobites between the North and South Sides of the Western Pacific Basin. Proc. Japan Acad., Series B, Vol.62, Number 8. Li, G.-X., et al. (2012). Early Cambrian eodiscoid trilobite Hupeidiscus orientalis from South China: ontogeny and implications for affinities of Mongolitubules-like sclerites. Bulletin of Geosciences, 87(1). Liu, Q., Q. Lei and Q. Ou (2011). Ventral exoskeleton morphology of the trilobite Neodrepanura premesnili from the Cambrian Kushan Formation, Shandong, China. Bulletin of Geosciences, 86(3). McKenzie, N.R., et al. (2011). Trilobites and zircons link north China with the eastern Himalaya during the Cambrian. Geology, 39. Ou, Q., et al. (2009). A Juvenile Redlichiid Trilobite Caught on the Move: Evidence from the Cambrian (Series 2) Chengjiang Lagerstatte, Southwestern China. Palaios, Vol.24. Peng, S., X. Yang and N.C. Hughes (2008). The Oldest Known Stalk-Eyed Trilobite, Parablackweldaria Kobayashi, 1942 (Damesellinae, Cambrian), and its Occurrence in Shadong, China. J.Paleont., 82(4). Peng, S., L.E. Babcock and H. Lin (2001). Illustrations of Polymeroid Trilobites from the Huaqiao Formation (Middle-Upper Cambrian), Paibi and Wangcun Sections, Northwestern Hunan, China. Palaeoworld, Number 13. (Thanks to Oxytropidoceras for finding this one!) Peng, S., et al. (2009). Cambrian Trilobites from the Parahio and Zanskar Valleys, Indian Himalaya. The Paleontological Society. Shah, S.K., S.K. Parcha and A.K. Raina (1991). Late Cambrian Trilobites from Himalaya. Journal of the Palaeontological Society of India, Vol.36. Shen, C., et al. (2014). Development and trunk segmentation of early instars of a ptychopariid trilobite from Cambrian Stage 5 of China. Scientific Reports, 4: 6970. Singh, B.P. (2013). Additional Late Middle Cambrian Trilobites from Karsha Formation (Haimanta Group) Zanskar Region of Zanskar-Spiti Basin, Northwest Himalaya. Journal Geological Society of India, Vol.81. Singh, B.P., et al. (2016). Revision of the Diagnostic Features of the Trilobite Genus Bhargavia (Ellipsocephaloidea) from the Parahio Valley (Spiti), Northwest Himalaya, India. Journal of the Palaeontological Society of India, Vol.61(1). Singh, B.P., et al. (2016). The Cambrian trilobite fauna from the Shian (Saybang) section Pin Valley (Spiti) and its biostratigraphic significance. Palaeoworld, xxx. (Article in Press) Singh, B.P., et al. (2016). Trilobite fauna of basal Cambrian Series 3 (Stage 5) from the Parahio Valley (Spiti), Northwest Himalaya, India, and its biostratigraphic significance. Annales de Paleontologie, 102. Singh, B.P., et al. (2014). Yuehsienszella (Cambrian Series 2) Trilobite from the Parahio Valley, Spiti Region (Zanskar-Spiti Sub-Basin), India and its Biostratigraphic Significance. Journal of the Palaeontological Society of India, Vol.59(1). Sundberg, F.A., et al. (2011). Detailed trilobite biostratigraphy across the proposed GSSP for Stage 5 ("Middle Cambrian" boundary) at the Wuliu-Zengjiayan section, Guizhou, China. Bulletin of Geosciences, 86(3). Zhang, X. (1989). Ontogeny of an Early Cambrian eodiscoid trilobite from Henan, China. Lethaia, Vol.22. Zhang, X., D. Fu and T. Dai (2012). A new species of Kangacaris (Arthropoda) from the Chengjiang lagerstätte, lower Cambrian, southwest China. Alcheringa, 36. Australia/New Zealand Henderson, R.A. (1976). Upper Cambrian (Idamean) Trilobites from Western Queensland, Australia. Palaeontology, Vol.19, Part 2. Jago, J.B. (1976). Late Middle Cambrian Agnostid Trilobites from North-Western Tasmania. Palaeontology, Vol.19, Part 1. Jago, J.B. (1972). Two New Cambrian Trilobites from Tasmania. Palaeontology, Vol.15, Part 2. Jago, J.B. and A.V. Brown (2001). Late Middle Cambrian Trilobites from Trial Ridge, Southwestern Tasmania. Papers and Proceedings of the Royal Society of Tasmania, Vol.135. Jago, J.B. and B. Daily (1974). The Trilobite Clavagnostus Howell from the Cambrian of Tasmania. Palaeontology, Vol.17, Part 1. Jell, P.A. and R.A. Robison (1978). Revision of a Late Middle Cambrian Trilobite Faunule from Northwestern Queensland. The University of Kansas Paleontological Contributions, Paper 90. Paterson, J.R., et al. (2007). Taphonomy and palaeoecology of the emuellid trilobite Balcoracania dailyi (early Cambrian, South Australia). Palaeogeography, Palaeoclimatology, Palaeoecology, 249(3-4). Pocock, K.J. (1970). The Emuellidae, a New Family of Trilobites from the Lower Cambrian of South Australia. Palaeontology, Vol.13, Part 4. Pocock, K.J. (1964). Estaingia, New Trilobite Genus from the Lower Cambrian of South Australia. Palaeontology, Vol.7, Part 3. Shergold, J.H. (1975). Late Cambrian and Early Ordovician Trilobites from the Burke River Structural Belt, Western Queensland, Australia. Department of Minerals and Energy, Bureau of Mineral Resources, Geology and Geophysics, Australian Government Publishing Service, Bulletin 153, Vol.1 (text). Shergold, J.H. (1971). Late Upper Cambrian Trilobites from the Gola Beds, Western Queensland. Commonwealth of Australia, Department of National Development, Bureau of Mineral Resources, Geology and Geophysics, Bulletin 112. Wang, Q., et al. (1989). Upper Cambrian (Mindyallan) trilobites and stratigraphy of the Kayrunnera Group, western New South Wales. BMR Journal of Australian Geology & Geophysics, 11. Webby, B.D., Q. Wang, and K.J. Mills (1988). Upper Cambrian and Basal Ordovician Trilobites from Western New South Wales. Palaeontology, Vol.31, Part 4. Europe (including Greenland and Siberia) Aceñolaza, G.F., et al. (2014). First Farongian (Late Cambrian) trilobites from the Cantabrian Zone (north-western Spain). Bulletin of Geosciences, 89(2). Ahlberg, P. (1980). Early Cambrian trilobites from northern Scandinavia. Norsk Geologisk Tidsskrift, Vol.60. Ahlberg, P., et al. (2005). Phosphatised olenid trilobites and associated fauna from the Upper Cambrian of Vastergotland, Sweden. Acta Palaeontologica Polonica, 50(3). Axheimer, N., P. Ahlberg and P. Cederstrom (2007). A new lower Cambrian eodiscoid trilobite fauna from Swedish Lapland and its implications for intercontinental correlations. Geol.Mag., 144(6). Bushuev, E., I. Goryaeva and V. Pereladov (2014). New discoveries of the oldest trilobites Profallotaspis and Nevadella in the northeastern Siberian Platform, Russia. Bulletin of Geosciences, 89(2). Cowie, J. and K.J. McNamara (1978). Olenellus (Trilobita) from the Lower Cambrian Strata of North-West Scotland. Palaeontology, Vol.21, Part 3. Dies-Alvarez, M.E., E. Linan and R. Gozalo (2007). The Cambrian genus Onaraspis Opik, 1968 (Trilobita) in Spain. Memoirs of the Association of Australasian Palaeontologists, 34. Esteve, J. (2014). Intraspecific variability in paradoxidid trilobites from the Purujosa trilobite assemblage, (middle Cambrian, northeast Spain). Acta Palaeontologica Polonica, 59(1). Esteve, J. and S. Zamora (2014). Enrolled agnostids from Cambrian of Spain provide new insights about the mode of life in these forms. Bulletin of Geosciences, 89(2). Fatka, O., M. Szabad and P. Budil (2009). Malformed agnostids from the Middle Cambrian Jince Formation of the Příbram-Jince Basin, Czech Republic. Bulletin of Geosciences, 84(1). Fatka, O., et al. (2008). Exoskeletal Configurations of Cambrian and Ordovician Agnostids: Examples from the Barrandian Area of Czech Republic. In: Advances in trilobite research. Rabano, I., R. Gozalo and D. Garcia-Bellido (eds.). Gil Cid, M.D. and J.B. Jago (1989). New Data on the Lower Cambrian Trilobites of Cortijos De Malagon (Spain). Estudios geol., 45. Kordule, V. (2006). Ptychopariid trilobites in the Middle Cambrian of Central Bohemia (taxonomy, biostratigraphy and synecology). Bulletin of Geosciences, 81(4). Lagebro, L., M. Stein and J.S. Peel (2009). A New ?Lamellipedian Arthropod from the Early Cambrian Sirius Passet Fauna of North Greenland. J.Paleont., 83(5). Laibl, L., et al. (2014). Early ontogeny of the Cambrian trilobite Sao hirsuta from the Skryje-Týřovice Basin, Barrandian area, Czech Republic. Bulletin of Geosciences, 89(2). Linan, E., M.E. Dies and R. Gozalol (2003). A Review of the Genus Kingaspis (Trilobita, Lower Cambrian) from Spain and its Biostratigraphical Consequences for Correlation in the Mediterranean Subprovince. Revista Espanola de Paleontologia, 18(1). Lopez-Villalta, J.S. (2016). Self-regulation of trilobite diversity in Murero (Middle Cambrian, Spain) due to compensatory extinction. Geologica Acta, Vol.14, Number 1. McNamara, K.J. (1978). Paedomorphosis in Scottish Olenellid Trilobites (Early Cambrian). Palaeontology, Vol.21, Part 3. Naimark, E., Y. Shabanov and I. Korovnikov (2011). Cambrian trilobite Ovatoryctocara Tchernysheva, 1962 from Siberia. Bulletin of Geosciences, 86(3). Nikolaisen, F. and G. Heningsmoen (1987). Lower and Middle Cambrian trilobites from the Digermul peninsula, Finnmark, Northern Norway. Nor.geol.unders.Bull., 419. Pegel, T.V. (2014). Biofacies and age of Cambrian trilobite associations of the Diringde reef complex (northern Siberian Platform, Russia). Bulletin of Geosciences, 89(2). Pillola, G.L. (1993). The Lower Cambrian Trilobite Bigotina and Allied Genera. Palaeontology, Vol.36, Part 4. Radwanski, A. and P. Roniewicz (1963). Upper Cambrian Trilobite Ichnocoenosis from Wielka Wisniowka (Holy Cross Mountains, Poland). Acta Palaeontologica Polonica, Vol.VIII, Number 2. Robison, R.A. (1984). Cambrian Agnostida of North America and Greenland, Part I. Ptychagnostidae. The University of Kansas Paleontological Contributions, Paper 109. Rushton, A.W.A. and T. Weidner (2007). The Middle Cambrian paradoxidid trilobite Hydrocephalus from Jamtland, central Sweden. Acta Geologica Polonica, Vol.57, Number 4. Shergold, J.H., E. Linan, and T. Palacios (1983). Late Cambrian Trilobites from the Najerilla Formation, North-Eastern Spain. Palaeontology, Vol.26, Part 1. Smith, J.D.D. and D.E. White (1963). Cambrian Trilobites from the Purley Shales of Warwickshire. Palaeontology, Vol.6, Part 3. Terfelt, F. (2003). Upper Cambrian trilobite biostratigraphy and taphonomy at Kakeled on Kinnekulle, Vastergotland, Sweden. Acta Palaeontologica Polonica, 48(3). Vizcaïno, D., J.J. Álvaro and É. Monceret (2004). Trilobites and ichnofossils from a new fossil Lagerstätte in the Lower Cambrian Pardailhan Formation, southern Montagne Noire, France. Geobios, 37. Weidner, T. and J.O.R. Ebbestad (2014). The early middle Cambrian agnostid Pentagnostus praecurrens (Westergard 1936) from Sweden. Memoirs of the Association of Australasian Palaeontologists, 45. Weidner, T. and A.T. Nielsen (2010). Yuepingia? sp., a ceratopygid trilobite from the upper Cambrian (Furongian) of Scandinavia. Bulletin of the Geological Society of Denmark, Vol.58. Whittington, H.B. (1958). The Ontogeny of the Trilobite Peltura scarabaeoides from Upper Cambrian, Denmark. Palaeontology, Vol.1, Part 3. Whitworth, P.H. (1970). Ontongeny of the Upper Cambrian Trilobite Leptoplastus crassicornis (Westergaard) from Sweden. Palaeontology, Vol.13, Part 1. Zamora, S., et al. (2011). Exoskeletal abnormalities in paradoxidiid trilobites from the Cambrian of Spain, and a new type of bite trace. Bulletin of Geosciences, 86(3). (Thanks to piranha for finding this one!) Zylinska, A. and Z. Szczepanik (2009). Trilobite and acritarch assemblages from the Lower-Middle Cambrian boundary interval in the Holy Cross Mountains (Poland). Acta Geologica Polonica, Vol.59, Number 4. North America Adrain, J.M. and S.R. Westrop (2005). Late Cambrian ptychaspidid trilobites from western Utah: implications for trilobite systematics and biostratigraphy. Geol. Mag., 142(4). Adrain, J.M., S.E. Peters and S.R. Westrop (2009). The Marjuman trilobite Cedarina Lochman: thoracic morphology, systematics, and a new species from western Utah and eastern Nevada, USA. Zootaxa, 2218. Boyce, W.D. (1987). Cambrian - Ordovician Trilobite Biostratigraphy in Central Newfoundland. Current Research, Newfoundland Department of Mines and Energy, Mineral Development Division, Report 87-1. Burton Longacre, S.A. (1968). Trilobites of the Upper Cambrian Ptychaspid Biomere, Wilburns Formation, Central Texas. Ph.D. Dissertation - The University of Texas at Austin. Corbacho, J. and F.J. Lopez-Soriano (2013). Gabriellus kierorum: a new species of Judomiidae from the lower Cambrian (Series 2) of Canada. Batalleria, 19. Fritz, W.H. (1968). Lower and Early Middle Cambrian Trilobites from the Pioche Shale, East-Central Nevada, U.S.A. Palaeontology, Vol.11, Part 2. Kim, D.H., S.R. Westrop and E. Landing (2002). Middle Cambrian (Acadian Series) Conocoryphid and Paradoxidid Trilobites from the Upper Chamberlain's Brook Formation, Newfoundland and New Brunswick. J.Paleont., 76(5). Lerosey-Aubril, R., et al. (2012). Controls on Gut Phosphatisation: The Trilobites from the Weeks Formation Lagerstatte (Cambrian; Utah). PLoS ONE, 7(3). Palmer, A.R. (1968). Cambrian Trilobites of East-Central Alaska. U.S. Geological Survey Professional Paper 559-B. (158 pages) Palmer, A.R. (1965). Trilobites of the Late Cambrian Pterocephaliid Biomere in the Great Basin, United States. U.S. Geological Survey Professional Paper 493. (154 pages) Palmer, A.R. (1964). An Unusual Lower Cambrian Trilobite Fauna from Nevada. U.S. Geological Survey Professional Paper 483-F. Palmer, A.R. (1962). Glyptagnostus and Associated Trilobites in the United States. U.S. Geological Survey Professional Paper 374-F. Palmer, A.R. (1960). Trilobites of the Upper Cambrian Dunderberg Shale, Eureka District, Nevada. U.S. Geological Survey Professional Paper 334-C. Palmer, A.R. (1954). An Appraisal of the Great Basin Middle Cambrian Trilobites Described Before 1900. U.S. Geological Survey Professional Paper 264-D. Pratt, B.R. and J.W.F. Waldron (1991). A Middle Cambrian trilobite faunule from the Meguma Group of Nova Scotia. Can.J. Earth Sci., Vol.28. Robison, R.A. (1984). New Occurrences of the Unusual Trilobite Naraoia from the Cambrian of Idaho and Utah. The University of Kansas Paleontological Contributions, Paper 112. Robison, R.A. (1984). Cambrian Agnostida of North America and Greenland, Part I. Ptychagnostidae. The University of Kansas Paleontological Contributions, Paper 109. St. Jean, J. (1973). A New Cambrian Trilobite from the Piedmont of North Carolina. American Journal of Science, Cooper Vol. 273-A. Stitt, J.H. (1977). Latest Cambrian and Earliest Ordovician Trilobites, Wichita Mountains Area, Oklahoma. Oklahoma Geological Survey, Bulletin 124. Stitt, J.H. (1971). Late Cambrian and Earliest Ordovician Trilobites, Timbered Hills and Lower Arbuckle Groups, Western Arbuckle Mountains, Murray County, Oklahoma. Oklahoma Geological Survey, Bulletin 110. Stumm, E.C. (1956). Upper Cambrian Trilobites from Michigan. Contributions from the Museum of Paleontology - University of Michigan, Vol. XIII, Number 4. Sundberg, F.A. (1994). Corynexochida and Ptychopariida (Trilobita, Arthropoda) of the Ehmanielle Biozone (Middle Cambrian), Utah and Nevada.Contributions in Science - Natural History Museum of Los Angeles County, Number 446. (139 pages) Taylor, M.E. and R.B. Halley (1974). Systematics, Environment and Biogeography of Some Late Cambrian and Early Ordovician Trilobites from Eastern New York State. U.S. Geological Survey Professional Paper 834. Webster, M. and E. Landing (2016). Geological context, biostratigraphy and systematic revision of late early Cambrian olenelloid trilobites from the Parker and Monkton formations, northwestern Vermont, USA. Australasian Palaeontological Memoirs, 49. Webster, M., R.R. Gaines and M.C. Hughes (2008). Microstratigraphy, trilobite biostratinomy, and depositional environment of the "Lower Cambrian" Ruin Wash Lagerstatte, Pioche Formation, Nevada. Palaeogeography, Palaeoclimatology, Palaeoecology, 264. Westrop, S.R. and J.M. Adrain (2014). The missisquoiid trilobite Parakoldinoidia Endo 1937 in the uppermost Cambrian of Oklahoma and Texas, and its biostratigraphic significance. Memoirs of the Association of Australasian Palaeontologists, 45. Westrop, S.R. and J.M. Adrain (2009). The Late Cambrian (Steptoean; Furongian) trilobite Pseudokingstonia Palmer, 1865 in North America. Can.J.Earth Sci., 46. Westrop, S.R. and J.M. Adrain (2007). Bartonaspis new genus, a trilobite species complex from the base of the Upper Cambrian Sunwaptan Stage in North America. Can.J.Earth Sci., 44. Westrop, S.R., J.M. Adrain and E. Landing (2011). The Cambrian (Sunwaptan, Furongian) agnostoid arthropod Lotagnostus Whitehouse, 1936, in Laurentian and Avalonian North America: systematics and biostratigraphic significance. Bulletin of Geosciences, 86(3). Whittington, H.B. (1995). Oryctocephalid Trilobites from the Cambrian of North America. Palaeontology, Vol.38, Part 3. South America/Central America/Caribbean Stone, P., M.R.A. Thomson and A.W.A. Rushton (2012). An Early Cambrian archaeocyath-trilobite fauna in limestone erratics from the Upper Carboniferous Fitzroy Tillite Formation, Falkland Islands. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, Vol.102. (revised text) General Cambrian Trilobites Order Agnostida Daily, B. and J.B. Jago (1975). The Trilobite Lejopyge Hawle and Corda and the Middle-Upper Cambrian Boundary. Palaeontology, Vol.18, Part 3. Robison, R.A. (1978). Origin, Taxonomy and Homeomorphs of Doryagnostus (Cambrian Trilobita). The University of Kansas Paleontological Contributions, Paper 91. Zhang, X.-g. and E.N.K. Clarkson (2009). Trunk segmentation of Cambrian eodiscoid trilobites. Evolution & Development, 11(3). Zhang, X.-g. and E.N.K. Clarkson (1990). The Eyes of Lower Cambrian Eodiscid Trilobites. Palaeontology, Vol.33, Part 4. Order Asaphida Hughes, N.C. (1994). Ontogeny, Intraspecific Variation, and Systematics of the Late Cambrian Trilobite Dikelocephalus. Smithsonian Contributions to Paleobiology, Number 79. Labandeira, C.C. and N.C. Hughes (1994). Biometry of the Late Cambrian Trilobite Genus Dikelocephalus and its Implications for Trilobite Systematics. Journal of Paleontology, Vol.68, Number 3. Order Harpetida Adrain, J.M. and S.R. Westrop (2006). Notchpeakia, a New Genus of Upper Cambrian (Sunwaptan) "Entomaspidid" Trilobites. Journal of Paleontology, 80(6). Order incerti ordinis Whittington, H.B. (1994). Burlingiids: Small Proparian Cambrian Trilobites of Enigmatic Origin. Palaeontology, Vol.37, Part 1. Order Odontopleurida Bruton, D.L. (1983). Cambrian Origins of the Odontopleurid Trilobites. Palaeontology, Vol.26, Part 4. Order Ptychopariida Gaines, R.R. and M.L. Droser (2003). Paleoecology of the familiar trilobite Elrathia kingii: an early exaerobic zone inhabitant. Geology, Vol.31, Number 11. Webster, M. and M.L. Zelditch (2011). Evolutionary Lability of Integration in Cambrian Ptychoparioid Trilobites. Evolutionary Biology, 38. Webster, M. and M.L. Zelditch (2011). Modularity of a Cambrian ptychoparioid trilobite cranidium. Evolution & Development, 13:1. Order Redlichiida Clarkson, E.N.K. (1973). Morphology and Evolution of the Eye in Upper Cambrian Olenidae {Trilobita}. Palaeontology, Vol.16, Part 4. Fortey, R.A. (2000). Olenid trilobites: The oldest known chemoautotrophic symbionts? PNAS, Vol.97, Number 12. Kobayashi, T. (1987). On the Redlichiacea (Trilobita) and the Redlichian Province. Proc. Japan Acad., Series B, Vol.63, Number 2. Lieberman, B.S. (1999). Systematic Revision of the Olenelloidea (Trilobita, Cambrian). Bulletin of the Peabody Museum of Natural History - Yale University, Bull.45. Palmer, A.R. and L.N. Repina (1993). Through a Glass Darkly: Taxonomy, Phylogeny, and Biostratigraphy of the Olenellina. The Univrsity of Kansas - Paleontological Contributions, Number 3. Rushton, A.W.A. (1967). The Upper Cambrian Trilobite Irvingella nuneatonensis (Sharman). Palaeontology, Vol.10, Part 3. Webster, M. (2009). Ontogeny, Systematics and Evolution of the Effaced Early Cambrian Trilobites Peachella Walcott, 1910 and Eopeachella New Genus (Olenelloidea). Journal of Paleontology, 83(2). Webster, M. (2009). Systematic revision of the Cambrian trilobite Bathynotus Hall, 1860, with documentation of new occurrences in western Laurentia and implications for intercontinental biostratigraphic correlation. Memoirs of the Association of Australasian Palaeontologists, 37. Webster, M. (2007). Paranephrolenellus, a new genus of Early Cambrian olenelloid trilobite. Memoirs of the Association of Australasian Palaeontologists, 34. Whittington, H.B. (1980). Exoskeleton, Moult Stage, Appendage Morphology, and Habits of the Middle Cambrian Trilobite Olenoides serratus. Palaeontology, Vol.23. Part 1. General Alpert, S.P. and J.N. Moore (1975). Lower Cambrian trace fossil evidence for predation on trilobites. Lethaia, Vol.8. Alvaro, J.J., et al. (2003). Palaeogeographical controls on the Cambrian trilobite immigration and evolutionary patterns reported in the western Gondwana margin. Palaeogeography, Palaeoclimatology, Palaeogeography, 195. Eriksson, M.E. and F. Terfelt (2012). Exceptionally Preserved Cambrian Trilobite Digestive System Revealed in 3D by Synchrotron-Radiation X-Ray Tomographic Microscopy. PLoS ONE, 7(4). Kobayashi, T. (1987). The Trilobite Provinciality of the Tethys Sea in the Cambrian Period. Proc. Japan Acad., Series B, Vol.63, Number 4. Lieberman, B.S. (2002). Phylogenetic Analysis of Some Basal Early Cambrian Trilobites, the Biogeographic Origins of the Eutrilobita, and the Timing of the Cambrian Radiation. J.Paleont., 76(4). Rushton, A.W.A. (1968). Revision of Two Upper Cambrian Trilobites. Palaeontology, Vol.11, Part 3. Whittington, H.B. (1988). Hypostomes and Ventral Cephalic Sutures in Cambrian Trilobites. Palaeontology, Vol. 31, Part 3.
  19. I found this in a Mississippian limestone roadcut. It looks like the cephalon and compound eye of a trilobite, but I think it's probably a brachiopod of some sort. I took the best pictures I could. Any ideas?
  20. I just spent the past few days digging up some neat Devonian-era fossils from the Penn Dixie Hamburg, New York site and have two Greenops and 10 Eldredgeops that need prepped. Would anyone out there be willing to prepare these fossils for either a fee or for some of the spoils? I have a lot of high quality Eldredgeops, cephalopods, bryozoans, and crinoids that I could give up in exchange for the fossil preparations. I also have a bunch of shark teeth from Calvert Cliffs along with some neat shells (Turitella and Ecphora). Send me a personal message if you're up to the task or respond if you have any referrals.
  21. Found some amazing stuff today with @Kane @ischua @DevonianDigger @Fossildude19 and @drobare We hauled some serious rock and had somewhat of an assembly line going with splitting and processing the pieces. It was a really solid day all around and everyone walked away with some sweet finds. The following is a sample of some of the cool stuff I've found. The rest is packed away. The first is a large cephalon and will look good despite not having a body and then there's a Spyroceras cephalopod that might benefit from some very gentle prep work. I really like cephalopods because of all the neat chambers they contain.
  22. I've already posted a picture of this one in the fossil trips section, so my apologies for the duplication. I'm seeking confirmation that this is indeed a Bellacartwrightia whiteleyi. He's a bit beat up, missing eyes and a pygidium (or it may be hidden beneath the matrix), but what leads me to this conditional assumption is the (1) raised spines on the axial lobe, and (2) the longer and somewhat broader genal spines than what one finds on a Greenops. I just want to get the label on this one and put any uncertainty to bed. My thanks for ID assistance!
  23. Hi all I hope I do not wear out my welcome by keep posting so many questions . Found this years ago in a time before I got hooked on fossil collecting .I think it was in the Brecon Beacons . Is it is part of a trilobite.... or that is really what I was hoping. Thanks to everyone who posted on my last question really all enjoyed all your reposones . Bobby
  24. I used to have some fossils when I was younger, but they've all been lost to time. Just purchases these from some highly rated sellers online. I like them for different reasons. Any opinions? They were cheap. The plant was $4.50 and the Trilobite was $13 (it's just 3/4 of an inch). The fern is about 2 x 2 1/2 inches. What do you think of them? It's a Cambrian trilobite btw.
  25. Last summer I had the opportunity to explore SW Wisconsin for a short afternoon. I posted my finds back then including this picture: This trilobite was IDed as an upside down Dolichoharpes reticulate by our Fossil Forum trilobite expert. He suggested that I have it professionally prepped due to its rarity. Being a conservative man to begin with, and having never had any of my finds professionally prepped, I was a bit concerned about the fees for this. But I found the right man for the job and he even gave me a great break on the prepping. The results to me were absolutely stunning!!! WELL WORTH the investment in proper cleaning. So here is the finished product: