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Found 82 results

  1. Echinocaris from Brookfield, New York

    From the album Phyllocarids

    Echinocaris punctuata Middle Devonian Hamilton Group Upper Ludlowville Formation Brookfield, NY Collected 7/18/20
  2. Complete Rhinocaris with telson

    From the album Middle Devonian in Central New York

    Rhinocaris columbina with both valves and a telson. (One valve is underneath the other). Windom Shale Moscow Formation Hamilton Group Middle Devonian Deep Springs Road Lebanon, New York Collected 7/18/20
  3. Another fossil found by amateurs makes the news. https://www.abc.net.au/news/2020-06-28/citizen-scientist-finds-460-million-year-old-fossil/12397700
  4. Trilobite help

    I received this fossil from a family friend to help with an assignment I am required to do, however, to complete it I need the taxonomy of the specimen. if anyone can help me with the species name for this fossil that will be greatly appreciated. (it was found in the Yass, NSW area for reference)
  5. Hi, Just wanted to ask if this listing is correct in regards to the identification. It is listed as the fossil head of the Anomalocaridid genus Aegirocassis. It is said to be from the Lower Fezouata Formation in Morocco dated about 480mya - so i believe the locality is correct for the species. Thanks in advance!
  6. I am hoping someone can help me with this large unknown trilobite. It was given to me many years ago (late 1980s) by my father, along with some other trilobites and other fossils, as a Christmas gift. He acquired the fossils from a member of the local fossil club (Delaware Valley Paleontological Society) and most were carefully labeled, but this one was missing its label. It is a large, partially enrolled trilobite (15 cm from "nose" to tail if unrolled and 6.5 cm at the widest point); there are small bumps down the middle of the thorax and on the glabellum. It is on a chunk of matrix that lets it stand on its own, and it is a cool display piece. But looking at it closely, it looks...wrong. There's not much detail on the eyes (which seems to be usual in fakes, but can also mean a poorly-prepped real specimen) and overall it just looks wrong, in a way that I can't quite articulate (which again could mean fake, or badly-prepped but real). So, my questions are: 1. Is this, in your opinion, a real trilobite that was badly prepped, or a fake? I would appreciate if you can point out specific features that lead you to your decision. 2. If it is real, can you hazard a guess as to genus/species, and (this is a stretch) where it might come from? The scrape marks on the matrix resemble what I've seen on some Moroccan specimens. However, the other trilobites it was sold with are all from the United States, except for one from Pakistan (!), if that means anything. I think this trilobite resembles Calymene in general shape and size, but I don't know much about trilobites (if that wasn't already obvious) and I could easily be wrong. Thanks in advance for any help you can give. Let me know if additional photos would help- my photography isn't great, but I'll do the best I can.
  7. Carboniferous Cyclus

    These are 7 of my best Cyclus from the Coal Measures of Derbyshire UK that i have collected over many years they range in size from 20mm to 12mm. I find these arthropods fascinating John.
  8. Since last year, I was starting hunting down all types of Bristolia genus. I am so fascinating about its shape. Here represents all the species I have acquired: Bristolia bristolensis (Resser 1928) Types: USNM 78390, the lectotype (defined in Palmer and Repina 1993); paralectotypes USNM 78391 and 78392. Bristolia bristolensis had originally been recognized (e.g., Riccio 1952; Palmer and Halley 1979; Palmer and Repina 1993) as a highly variable species, particularly in the condition of the intergenal and genal spine angles. However, Lieberman (1998) used univariate measurements and statistical analyses to define a well-constrained B. bristolensis based on Resser’s (1928) lectotype, and demonstrated that what had traditionally been treated as a broadly variable B. bristolensis was actually two different species. The species referred to as Bristolia n. sp. in Lieberman (1998) is described here as B. harringtoni n. sp. Bristolia bristolensis has the intergenal angle deflected at an 80 to 95 degree angle relative to a transverse line and the genal spine angle is variably developed opposite and/or between the distal tips of S2 and S3. In B. harringtoni the intergenal angle is deflected at a 50 to 65 degree angle relative to a transverse line and the genal spine angle is developed variably opposite the distal tip of S2 or the medial part of L1. Occurrence: California: the Carrara Formation, in the lower Bristolia zonule, upper part of the Olenellus zone, Early Cambrian, following Nelson (1976) and Palmer and Halley (1979), in the Grapevine, Funeral and Resting Spring ranges, the White-Inyo/Death Valley region, and in the Latham Shale, Marble Mountains, 190 m W of the limestone quarry, 0.5 mi E of Cadiz, in the Mojave Desert portion of San Bernardino County, possibly equivalent to Hazzard’s (1933) locality M-5, treated as in the Bristolia zonule. The above content comes from paper: Systematic Revision of the Olenelloidea (Trilobita, Cambrian) Bulletin 5 of the Peabody Museum of Natural History Yale University 18 October 1999 New Haven, Connecticut Bristolia Insolens (Resser, 1928) Bristolia cf. parryi
  9. Thelxiope like creature from Fezouata Shale, described by Peter Van Roy 2013. It looks very similar to the Burgess one: Thelxiope palaeothalassia LINK: https://burgess-shale.rom.on.ca/en/fossil-gallery/view-species.php?id=123
  10. Here presents three rare arthropods acquired from Fezouata Shale: Brachyaglaspis singularis gen. et sp. nov., which is described in 2015 for the first time. The paper is: 'A new aglaspidid euarthropod with a six-segmented trunk from the Lower Ordovician Fezouata Konservat-Lagerstätte, Morocco'. The first shows pretty nice outline of this aglaspidid, the third one is quite crappy...Fourth picture is the reconstruction of this type.
  11. Calling Bug People!

    I bought this bit of Madagascar copal a year ago, then finally got a decent microscope to see the bugs this week. They are less than a mm each. Now I'm stumped. I am a certified *modern* naturalist. I know something about insects. This one fits all the defining characteristics of an adult insect - probably Coleoptera - except that I only see four legs and may or may not have had antennae at some point. The heads are not very clear at any angle. On the bottom view, there are nubs at the end of the abdomen that *could* be legs, but that is the wrong place for insect legs. On the side views, it looks like there might be legs folded backward, as is common with some beetles, but the underside view also does not show any attachment points where there might have been legs that broke off. Any paleo-entomologists out there to point out what I am clearly missing in these pictures?
  12. Preserved Cambrian Brain

    Nevermind that the authors got the age wrong by a factor of 1000! They thought it was 500,000 years old but they say Cambrian so I guess it is 500 million years old. https://news.google.com/articles/CAIiEGCPp7KKbJYVK8AnXN7shMsqGQgEKhAIACoHCAowrq6BCzCw9PwCMMjF7gU?hl=en-US&gl=US&ceid=US%3Aen
  13. Plant or Arthropod?

    I found this in West Yorkshire (UK) in the Pennine Lower Coal Measures formation (upper Carboniferous). I suspect it is plant, but it also looks like some arthropod fragments I have seen. What do you think? Thanks, Daniel
  14. trilobite anatomy

    here ACTA AD RES NATURAE ESTONICAE PERSCRÜTANDAS EDITA A SOCIETATE REBUS NATURAE INVESTIGANDIS IN ÜN1VERSITATE TARTUENSI CONST1TUTA I SER.: GEOLOGICA, CHEMICA ET PHYSICA VOL. XI, FASC. 1/2,1936 ÜBER DAS PANDERSCHE ORGAN BEI DEN ASAPHIDEN DES OSTBALTISCHEN ORDOVICIUMS VON p. siegfried,tartu about 94 MB "transliteration": On the Panderian Organ of East-Baltic Asaphids Sprache:Deutsch Langue:Allemand Language :German Starts from: PDF page 29 Some care with the taxonomy MIGHT be in order,given the age of the piece above:"schematical figurations of the undersides of right-side pleurae in the Ordovician Baltoc of Estonia"
  15. This is a relatively rare member of the marine (Essex) portion of the Mazon Creek deposit. Hesslerella shermani looks to the casual observer to be some type of shrimp. It is actually a marine isopod related to modern day pill bugs. One of the main features that differentiate it from a shrimp is that it lacks a carapace. Other distinguishing characteristics are a rounded head with large eyes. The legs are also similar in length. Hesslerella is one of the smallest crustaceans found in the Mazon Creek deposit. They average around 2 centimeters or less in body length. At the time Hesslerella was described (Schram 1970), it was the earliest known isopod in the fossil record.
  16. Hello forum folks I went to DSR again yesterday 10/05/19 as I had another free day to go collecting. I may not being able to fossil hunt until the end of the month so I had to take advantage! I have been noticing the phyllocarids are coming from certain intervals lower in the quarry...could be nothing....could be somthing....before I assumed I figured I should test it. I knew the exact bedding plane my last Echinocaris came from so I planned on opening a shelf on that bedding plane. My thought was if I could find another phyllocarid on that bedding plane maybe it could mean something....clearly not enough data to make any final assumptions but heck who wouldn’t dig a bedding plane that has produced lol. I was still specifically upset I couldn’t find the missing piece to my phyllocarid from last trip so I did some scanning I initially. I knew it was a waste so I got to work on the bedding plane I desired. before I got started I moved a lot of over burden and got some nice slabs moving. Loving the wedge and sledge combo....so much easier on my body physically. anyway....I found this Echinocaris punctata about 30 minutes into clearing off the shelf. Same bedding plane!!! Only about 1-2 feet from the one I found last trip. Bingo!! I’m going to show a few close ups...this is a really interesting specimen. It appears to be A double carapace folded in half. You can see the margins of the other half and some spots actually fold over slightly that confirm this. It would be great to reveal the other side but I would have a very thin, flattened, fragil specimen. also.....I’m feeling like the boy who cried wolf here but are these mandibles I see on the top left part of the specimen (Seen below)? The margins aren’t as easy to see but it’s clear there are some type or serrations on each part. Here is a close up that does a decent job showing what I’m talking about. They are really non photogenic because of the rust on the shale between the mandibles. It messes with the margins visually. It was still really messy with debris/rubble when I found it so I wasn’t sure where the counterpart was under the rubble. Foolishly it’s on a slab I left behind and I’m going to try and rush out after work to grab it this week. I found this another foot away from the phyllocarid above. When I found this I immediately thought I had a rhinocaris phyllocarid but now I’m not so sure? Unless someone can say for sure. Just doesn’t look right. here is a close up.....it has some lines running across it that make me question what this is. So for now I’m not sure. I found this Rhinocaris sitting out in the open so I have no idea what layer it came from. I’m positive this is a Rhinocaris and it’s very different from the other unknown specimen I found. Here is a reference photo for people who are unsure what phyllocarids are. I really think this specimen is special like the one I found last trip. Also, I do find it interesting that this was on the same bedding plane and very close to the last Echinocaris phyllocarid. More field work will help tell the tale. More to come....my trilobite finds from DSR and I found a layer with all Eldredgeops!!! Really awesome. Stay tuned for part 2
  17. Fossil identification

    Hi I found this fossil in Golden, BC and I can't identify it. I brought it to a BC Paleontological Alliance show today and all they could tell me was that it's an arthropod (probably from the Ordovician) Any tips are appreciated. Thanks
  18. Insect Plant Fish or ...?

    Greetings, everyone. I spent the other day on the east side of Ventura County breaking open sedimentary rocks. I'm not experienced enough with that sort of material to positively ID it but I think it was siltstone. There was a leaf and something else on both sides of one of the rocks. I've been having a hard time figuring out what the "something else" is. It measures about 35 by 14 millimeters. I took a few pictures of both sides under different lighting conditions to help bring out some of the finer details. It comes from the Modelo Formation (Miocene). Thanks ahead of time for any help in figuring out what it is. Here are pictures of the first side: Some pictures of the second side:
  19. Some maritime slab?

    I found this sandstone slab on our property in south west Colorado, near Placerville, and was struck by the spider like creature especially. There also seems to be a mollusk nearby this creature. But its legs would have been so fragile, hard to imagine how it could be a fossil. But it doesn't seem like just a random shape to me. Any thoughts? I had to reduce the pictures quite a bit to fit size requirements here.
  20. Help with easy Trilobite ID

    Hello all, I am a new member here and haven’t searched for fossils for 50 years, when I was 14 years old living in upstate New York. Currently on a trip to Newfoundland with my wife while visiting a friend in Harcourt, NL just 15 miles East of Clarenville I started digging and opening shale rocks in his backyard. I found a few smaller items that were non identifiable fossils but when I opened this one I knew immediately from my teenage years it was a trilobite but after googling I soon discovered there are many many varieties and periods which led me to this forum. I’m thinking this will be an easy one for many of you and save me Many hours of questions. Hope my images come through ok as ok as we are still on the road and I’m doing this with my phone and iPad. Thanks in advance for your help. Rick location found: Harcourt, NL approximately 500 feet from Smith’s Sound Its 2” in length if I don’t get the image with tape Measure loaded aqua blue shale
  21. Arthropod ID in Baltic Amber

    This past month I was at Latvia and Lithuania for ten nights, investigating their amber industries. Among other specimens, I bought this large polished nodule of transparent Baltic amber, that was reputed to have a "tiny spider" inclusion. I found and photographed a very small arthropod—but since I cannot count body parts and legs, I cannot say it's a spider. The purchase took place in Riga, Latvia; though I was informed that a great deal of available amber comes from Kaliningrad in the former-USSR. Jamey D. Allen - Bead Historian
  22. Just found this juvenile Eurypterid a couple hours ago....went rubble picking today in the Silurian waterlimes. I got very lucky....like 1 in 10 years of searching lucky. Time to get some lottery tickets! All kidding aside....I’m floored....super happy. I’ve been trying to find a nice Eurypterid for years ever since my first hunt in 2010-11. It’s about 1.5 inches. Juvenile for sure. It has walking legs and the swimming paddle on the left side. The right walking legs and paddle could be present but I’m too afraid to touch it. Here is a raw shot from the field. After a cleaning and application of a thin thin layer of washable Elmer’s glue and water to make it pop more. Picture with a scale. I also found this quality prosoma. I did find 2 other partial prosomas, body segments, a telson (mostly covered), a mouth plate with nice teeth, and I took home a few chucks of the Phelps member to freeze thaw. Never know right?! All my finds are in rubble so I might as well bring some rubble home haha. That’s all, just really excited..... Al
  23. Found this sandstone shale rock with possible insect fossil in the State Park.
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