Jump to content

Search the Community

Showing results for tags 'Ordovician'.

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
  • Gallery
  • 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
  • Pennsylvania Perspectives
  • 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
  • myfossiltrips.blogspot.com
  • 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
  • Recent Collecting Trips
  • retired blog
  • Stocksdale's Blog
  • andreas' Blog test
  • fossilman7's Blog
  • Hey Everyone :P
  • fossil maniac's Blog
  • Piranha Blog
  • xonenine's 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
  • Regg Cato'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
  • A guide to calcanea and astragali
  • 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
  • Paleo-Profiles
  • Walt's Blog
  • Between A Rock And A Hard Place
  • Rudist digging at "Point 25", St. Bartholomä, Styria, Austria (Campanian, Gosau-group)
  • Prognathodon saturator 101


  • Calendar


  • Annelids
  • Arthropods
    • Crustaceans
    • Insects
    • Trilobites
    • Other Arthropods
  • Brachiopods
  • Cnidarians (Corals, Jellyfish, Conulariids )
    • Corals
    • Jellyfish, Conulariids, etc.
  • Echinoderms
    • Crinoids & Blastoids
    • Echinoids
    • Other Echinoderms
    • Starfish and Brittlestars
  • Forams
  • Graptolites
  • Molluscs
    • Bivalves
    • Cephalopods (Ammonites, Belemnites, Nautiloids)
    • Gastropods
    • Other Molluscs
  • Sponges
  • Bryozoans
  • Other Invertebrates
  • Ichnofossils
  • Plants
  • Chordata
    • Amphibians & Reptiles
    • Birds
    • Dinosaurs
    • Fishes
    • Mammals
    • Sharks & Rays
    • Other Chordates
  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

Found 823 results

  1. I recently acquired a Daedalocrinus bellevillensis crinoid fossil plate from the Bobcaygeon formation of Brechin, Ontario. At the bottom of the plate is what appears to be an annelid worm fossil. It is segmented but the segmentation is nothing like the segmentation of any crinoid stems I have seen and is more similar in appearance to a modern earthworm; it also terminates with a point. It also has occurred to me that this might be a frond from a crinoid but I don't know what the terminations look like. Would anyone have any suggestions as to how I might identify this fossil? The picture doesn't do justice to it but the item of interest is the item crossing the crinoid stem. Any suggestions would be appreciated.
  2. Mysterious fossil found in Cincinnati

    I found a fossil that looks like no other in my collection. Any help to what it would be is much appreciated. Found in a creek rock deposit in Cincinnati area. Here are several angles and lighting.
  3. Unknown tube, Richmond, Indiana

    On Dec. 31st, I had the opportunity to stop in Richmond, Indiana on my drive from Columbus, Ohio to Plainview, Mn. It was pouring rain with occasional claps of thunder when I arrived so I had to pull into Wal-Mart and purchase an umbrella before stepping out to look at the rock hillside. The finds were many, but I am not good at IDing this tubular "thing". There was one on each side of the rock. I did not see any more at this site. It was found in what I think is Whitewater Formation, upper Ordovician. Scaphite? Tentaculite? Tiny Cephalopod? Worm Borrow? Can anyone help to give it a name?? Thanks!! Mike
  4. screw-shaped, chamberless cephalopod?

    Hey! I was looking for native artifacts in a neighbourhood creek when I came across what I thought was a somewhat large cephalopod fossil. The creek is in Louisville Kentucky, leading to Floyd’s Fork. From the USGS Mapview, it looks like it’s Ordovician of the Drake’s formation. Either Bardstown member or Saluda Dolomite member. Upon further examination, I saw that the ridges on the sides were angled very steeply. It was very covered by matrix, so I decided to get to work on it with a dremel tool. After getting a significant amount of material off the fossil, I found that the ridges along the side were not in fact bilaterally symmetrical, and rather that these ridges went down the length of it, spiraling like they would on a screw. It is hollow, partially filled in with some softer, red stone and crystallized on the inside. From what I can tell, it has a curve to it reminding me of cyrtoconic(?) cephalopods. I read somewhere that cephalopods are bilaterally symmetrical, so I decided to post this here since I now don’t have any better guesses on what it is. My only other thoughts are that shark coprolites can be spiral shaped, and that it seems too smooth and hollowed to be a horn coral. My heads buzzing about this. Mum said it could be a unicorn horn . Due to upload limits, I will be adding a couple more photos below. I could not find any other fragments of the fossil besides this one section.
  5. USA Brachiopoda ID

    Dear USA Brachiopoda enthusiasts, Could you see these images please? What is your expert idea about ID? I know that could be difficult from images. Thank you for any help you can offer. Ricardo
  6. Asaphus prep

    Put in a good 17 hours on what was supposed to be a quick and easy prep. This was from my excellent Russian connection, and I was under no illusion that there wouldn't be some problems with this bug. This will have been the third Asaphus lepidurus I've prepared this year, and the second in this orientation. Already, there is a fracture in the last pleural segment / facet nearest the pygidium, so this was going to be a practice prep.
  7. Today I stopped to stretch my back and did about 10 minutes of collecting near Whites Creek, Tennessee- I believe that this might be Richmond Group Ordovician. I would be looking for a little help on some IDs, I believe @Peat Burns, @Herb And @Tidgy's Dad might be able to help out. Here are some of my finds- Brachiopods- Gastropods- Bryozoan- I believe that the smaller pieces are Constellatia Florida. Hash Plates-
  8. Dzik_Phong_2016_Stratigraphy.pdf Dating of Cambrian–Ordovician boundary strata in northernmost Vietnam and methodological aspects of evolutionary biostratigraphic inference Jerzy Dzik and Nguyen Duc Phong Stratigraphy, vol. 13, no. 2, text-figures 1–5, pages 83–93, 2016 less than 2 Mb
  9. Sometimes the name just fits

    I made another day at my favorite hunting site. A cold and wet day. Didnt score anything really noticable, but this fat boy : Ectillaenus giganteus, who is actually "giganteus", complete and not that streched !
  10. Nileus armadillo

    From the album Trilobites

    Ordovician - Haellekis, Sweden
  11. Pliomera fischeri

    From the album Trilobites

    Ordovician - Kinnekulle, Sweden
  12. Found another # plate full of little bits and pieces, do you see anything identifiable? Photos show both sides, found on the Whitewater River in Southeast Indiana.
  13. I had a discussion elsewhere on the FF about Gabriceraurus herrmanni. The history of this trilobite is interesting. Walter(1924) described Ceraurus herrmanni from the Platteville limestone near the mouth of Catfish Creek, Dubuque Iowa. At this locality the Decorah is exposed and it is probably the unit the trilobite came from. The illustrated specimen only has a thorax and pygidium. Walter discusses how his species is different from Ceraurus dentatus and states that “The specimen is now in the Museum of the Collector, Mr. Richard Herrmann.” What ever happened to the collection of Mr. Herrmann is unknown and the specimen has not shown up in any museum collection and is assumed to be lost. Later Demott(1987) describes Gabriceraurus dentatus from the same unit the Decorah. In his synonymy he includes Ceraurus herrmanni (he spells “herrmanni” with only one “r”). Demott remarks that Walter(1927) thought C. herrmanni to be different from C. dentatus. However, the specimen is presumed to be lost and could not be compared to his material So, Demott concluded the specimens he has are the same as Gabriceraurus dentatus. Since Demott’s paper, more specimens have been collected and made their way into private and museum collections. Specimens of both G. dentatus and G. herrmanni have been examined and are determined to be different. The differences are subtle but different. Attached are two specimens of G. herrmanni I prepared that were collected by Al Scheer. One specimen is crushed flat and the other is in a limestone preserving it 3 dimensionally. The differences are striking and are a good example of how compaction of a trilobite can distort the features of a specimen. The flatten specimen looks more like a G. dentatus, while the 3 dimensional specimen is what G. herrmanni is supposed to look like.
  14. With the mild December weather, I decided to squeeze in one more collecting trip before the end of the year. I contacted a few friends and we hopped in the car and made a six hour trek from the Chicagoland area down to Northern Kentucky. We decided to collect a huge roadcut outside of Maysville Kentucky. The cut is well known to collectors of Cincinnatian aged fossils. Many beautiful crinoids, edrioasteroids and other rare Ordovician fauna have been found at this site. The cut is enormous and is quite overwhelming to a first time collector. I have not done much collecting in the Cincinnatian but had had a chance to briefly visit this site once before and it looked promising. The site cuts through several formations of the Cincinnatian. From bottom to top, it exposes the Kope, Fairview and Bellevue Formations. My main goal was to hopefully find a rare edrioasteroid. We initially concentrated on the upper layers in the Bellevue. We had already had some luck earlier in the day with echinoderms. We had stopped at a smaller cut on our way to the site that exposed the Kope Formation. My friend found 2 nice slabs with well preserved examples of the Crinoid Ectenocaris with stems and calyx’s preserved. Unfortunately, we did not have much luck locating any Edrioasteroids. I decided to head down the cut and do a little prospecting in the Fairview. Almost immediately, I stumbled upon my best find ever in the Cincinnatian! I was looking at pieces of shale when I was stunned to see a slab covered in trilobites! For those who have not collected in the Cincinnatian, finding any trilobites other then Flexicalymene and Isotelus is a rare occurrence. A collector is likely to only find isolated parts of some of the rarer types. The trilobites that you do find are normally individuals and likely enrolled. After closer inspection, I was amazed to see that the trilobites that were preserved on this slab appeared to be examples of Ceraurus milleranus! All appear to be prone and some are even piled on top of each other. Finding one complete Ceraurus in the Cincinnatian would be considered an amazing and very rare find. In all, we collected over twenty in various stages of growth ranging from a tiny 1/4 inch example to one nearly two inches in length. The slabs need to be cleaned and prepped but I am attaching a picture of one of the unfinished pieces. I will add more pictures to this post once everything is prepped. We found some other nice fossils that day that I will post as well.
  15. Ordovician taphonomy, Iowa

    maquordovicusavanitphosphjt049-web.pdf Heyo Van Iten, Michael Lichtenwalter, Juliana de Moraes Leme,Marcello Guimarães Simões * “Possible Taphonomic Bias in the Preservation of Phosphatic Macroinvertebrates in the Uppermost Maquoketa Formation (Upper Ordovician) of Northeastern Iowa (North-Central USA)” Journal of Taphonomy, vol.4, issue 4/2006 *all diacritics omitted
  16. Crinoid arms?

    Found this in Southeast Indiana, was wondering if it's Crinoid arms? It's a small rock but alot going on, just curious. Thank you!
  17. Being an amateur fossil collector, yet long time "rock hound", I became interested in learning and discovering what these fossils I picked up were. How did they come about and why? I live within the Cincinnatian Arch even though I'm in Southeast Indiana, it's a small area and Ordovovician in nature. But this book helped me understand what this area looked like, the stratification, and information of the fossils most commonly found here. I'm always looking for books and knowledge, so glad I found this forum!!
  18. Double Ectillaenus Giganteus

    From the album La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army

    Double Ectillaenus Giganteus from the ordovician shale south of Rennes France, found in spring 2018
  19. Finished this summer score

    Took some time to be done, but it was more about alot of small operations, than endless hours of pneumatic pen. All in all, the more time spent was with the dremel polishing the matrix. Before : Only operation before the picture was an emergency glueing on the field. Some time it s better to do this on the field, sometimes you better packed the different part of the puzzle home, clean them and glue them home. This time it was on the field. Then a bit of small chisel and a bit of pneumatic pen. Then a lot of dremel that will give the grey aspect to the matrix Then a bit of scalpel to remove a bit of matrix from the caudal spine. Then a bit of cutter to save one of the eodal' eyes from the counterpart. Then a bit of glue to set the said eye. And here we are :
  20. From the album La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army

    Association of Ectillaenus giganteus and Eodalmanitina Sp - before preparation (except it has been glued on the field.
  21. From the album La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army

    Eodalmanitina sp and Ectillaenus Giganteus association - detail : eodalmanitina : caudal spine has been cleaned a bit and an eyes reglued from the counterpart.
  22. From the album La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army

    Eodalmanitina sp and Ectillaenus Giganteus association from the ordovician shale south of Rennes/ France, collected in august 2018, finished in december 2018
  23. Ordovician Unknown

    I need help with another specimen that popped out of the Ordovician matrix I was busting up last week. I have NO clue as to what this is, or if it is even a fossil. I have split literally a ton of matrix on this roadcut and have not seen this before:
  24. Morocco ordovician trilobite

    This little spherical trilobite is given to me as a gift by a French friend in an mineral and fossil exhibit in Beijing, who said it must be a Morocco ordovician species. Is it possible for me to get to know more here?