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  1. Koopyetz

    Today’s finds

    Spent some time at road cut west of Canandaigua Lake. Found trilobite head first, others followed. Nice day for exploring. Regards Rick
  2. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This specimen exhibits both valves. Collected from the Middle Devonian Hamilton Group of Central NY on August 8, 2022

    © Owen Yonkin 2022

  3. From the album: Bertie Group fossils

    Acutiramus sp. from the Phelps member of the Fiddlers Green Formation, Herkimer County, New York. Self collected on August 8, 2022.

    © Owen Yonkin 2022

  4. SilurianSalamander

    Giant Ostracod?

    Found in some Paleozoic chalk and limestone gravel along with crinoids and brachiopods.
  5. connorp

    Mazon Creek Arthropod ID

    I had this Mazon Creek arthropod open recently. It was collected from the Braidwood fauna (freshwater/terrestrial), so initially I thought this was just a tiny syncarid shrimp as they are the most common arthropod to find here. However looking at it closer, I'm not so sure and was hoping for a second opinion. In particular, the legs are short and spiny and do not look like shrimp legs to me, although I may be wrong. Here are images of the positive and negative sides of the "head", middle, and rear, respectively. I put "head" in quotes because I can't tell if this is the head of the animal, or if it continues more into the concretion. @RCFossils @Nimravis @Mark Kmiecik @deutscheben @stats @bigred97 @flipper559 Any thoughts are appreciated.
  6. Nautiloid

    Complete Rhinocaris columbina carapace

    From the album: Nautiloid’s phyllocarid collection

    This is a nice 3D example of a Rhinocaris carapace, which was found by me on May 14 at a Middle Devonian site in Central NY

    © Owen Yonkin 2022

  7. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This is a great specimen of Rhinocaris columbina which I collected a couple summers ago. Both sides of the carapace are there as well as the majority of the telson, which is tucked around the underside of the rock.

    © Owen Yonkin 2022

  8. Nautiloid

    Echinocaris punctata

    From the album: Nautiloid’s phyllocarid collection

    This beautiful near-complete specimen was collected by me a couple summers ago at an exposure of the Middle Devonian hamilton group in Central NY.

    © Owen Yonkin 2022

  9. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This specimen is a partial valve and a partial telson. It was collected by me on May 14 at an exposure of the Middle Devonian Hamilton Group in Central NY.

    © Owen Yonkin 2022

  10. From the album: Fiddlers Green Formation

    A possible Naraoia. Langs Quarry, collected by Dean Ruocco.
  11. Barrelcactusaddict

    Leptomyrmex neotropicus (Dominican Amber)

    From the album: Fossil Amber and Copal: Worldwide Localities

    La Toca Mine Cordillera Septentrional Santiago Province, Dominican Republic La Toca Fm. (Mamey Group) 20.43-13.65 Ma Specimen: 7.7g / 51x21x12mm Equipment: Samsung Galaxy S9 Plus BelOMO 10x Triplet Loupe Quantum 140lm LED Penlight The piece containing these inclusions is absolutely loaded with different arthropods, but the most spectacular inclusions are those of a swarm of 11 extinct Leptomyrmex ants: there are 9 complete and 2 incomplete individuals, averaging 3.5mm in body length. In a lighthearted interpretation, it appears as though the duo in this image are performing some acrobatic act, while half of another individual gives audience! Other prominent inclusions consist of a twig (7mm), spider (2mm), formicine ant (3mm), two muscoid flies (1.5mm), two nematoceran flies (possible chironomid at 1mm, heavily decomposed mycetophilid at 3mm), and numerous enhydros.

    © Kaegen Lau

  12. RCFossils

    Terataspis Pygidium

    I wish I could say that I found this one but was able to talk a friend of mine into parting with it. This is an almost complete pygidium of the elusive giant lichid Terataspis. It was found in a remote area of Northern Ontario. The pygidium measures approximately 10 centimeters across.
  13. Hi, I'm a newbie to this forum and would really appreciate some help identifying a fossil that my son found last week in mid-wales, Upper Gilwern Hill Quarry, Powys. It was found in the same strata of slate with trilobites that the quarry is famous for. multiple photos attached. Many thanks in advance for anyone who can help identify it.
  14. Looking for help with this Early Ordovician (Floian) trilobite from the Powell Dolostone of Arkansas, USA. The specimens (GRAY FIGURE below) were identified by Taylor (1968) as cf. Lannacus nericiensis Wiman, but that species (now a species of Megalaspides) doesn't seem like a great match, as the author notes in the paper. In fact, I'm not sure that proper Megalaspides even lived in North America. Last week, an Arkansan found another asaphide specimen (MAIZE AND BLUE FIGURE below) in these same rocks, which may or may not be the same species as the specimens described by Taylor. My question: Could these all be specimens of Isoteloides canalis? That species is already known from the Powell Dolostone in Missouri per Weller & St. Clair (1928) (as Isoteloides whitfieldi, now a subjective synonym of Isoteloides canalis). Or are these instead specimens of a distinct Powell asaphide, and if so, what genus & species? Thanks in advance. 1959 Treatise blurbs for Isoteloides and Megalaspides are in the BLACK AND WHITE FIGURE below. Here's Taylor (1968): https://scholarworks.uark.edu/cgi/viewcontent.cgi?article=3056&context=jaas Here's Weller & St. Clair (1928): https://share.mo.gov/nr/mgs/MGSData/Books/Volumes/Geology of Ste. Genevieve County/V-022.pdf GRAY FIGURE: MAIZE AND BLUE FIGURE: BLACK AND WHITE FIGURE:
  15. mardopa

    rare fossils Fezouata Morocco

    Two very rare Ordovician fossils from the Fezouata Formation of Morocco. Any ideas?
  16. paleo.nath

    Eurypterid ID help

    I was given this Eurypterid fossil a while back and I was looking to see if anyone had any ideas towards a species, i’ve got no idea where it came from other than somewhere in the New England/Canada area. Someone has told me it looks like an Adelophthalamus but id like some more opinions. Thank you
  17. thorst

    Kylinxia zhangi

    Hi, it's time for the next 3d-printed animal from the Cambrian: Kylinxia zhangi. It was described only about a month ago (https://www.nature.com/articles/s41586-020-2883-7) and features Anomalocaris-like frontal appendages and Opabinia-like eyes on an early arthropod body. The model in 1:1 scale is only about 6cm long. The legs, while considerable thickened to allow printing, are still only about 1/3rd of a millimetre in diameter. It was printed on an Anycubic Photon Mono X at a resolution of 50µm from transparent resin and painted using an airbrush with highly thinned paint, such that the result is still translucent. The files for printing can be downloaded here: https://www.thingiverse.com/thing:4679914 Hope you like it! Cheers, Thorsten
  18. Hey everyone, I just got back from an amazing trip to Utah and Nevada collecting a host of trilobites. I am going to try and post some photos of that trip in the next day or so. I never seem to be able to find the time anymore! This find was pretty much the trip maker for non trilobite finds. I found this soft tissue arthropod in the house range in rocks known to have Burgess Shale fauna. So far this doesn’t seem to line up with anything I’ve seen in the Burgess. I’ve had 2 suggestions on an identification. Canadaspis perfecta is the best guess so far however there are glaring differences. The similarities to Canadaspis would have me thinking this could still be related (family or genus level?) as it shares the same body plan but with different proportions. The other suggestion was Eldonia but I’m far more skeptical of that. to me this is clearly some type of arthropod with a distinct head, carapace, body segments and legs. If it has a name I don’t seem to have the reach in my research tools to figure it out. The gut tract is also preserved in this specimen too. This has been confirmed by reputable sources so that also makes this even more wild of a specimen. If this turns out to be something unknown to science that would sure be a surprise....we seem to have slapped names on almost everything at this point lol. here is a photo of the slightly more detailed side. Here is a little diagram showing anatomy. searching desperately for my scale bar (eye roll emoji lol).....one I find a good scale I’ll put up another photograph. It’s only about an inch or prolly 3-4cm tip to tip in a straight line not measuring the curve of the animal. If anyone with Burgess Shale knowledge or some deep pocket knowledge on Cambrian arthropods want take a guess, let me know what you think! Al
  19. I_gotta_rock

    Nautiloid

    From the album: Delaware Fossils

    Eutrephoceras sp. Cretaceous C and D Canal Delaware City, Delaware Mt Laurel Fm.
  20. Runner64

    Euphoberia armigera

    The spiny millipede which is part of the Braidwood Biota was found in an ironstone concretion.
  21. From the album: Nautiloid’s Eurypterids and other Silurian fossils

    Assorted Eurypterus remipes and Pterygotus sp. parts Upper Silurian Bertie Group Fiddlers Green Formation Phelps member collected 8/22/20
  22. Nautiloid

    Large partial Eurypterid cephalon

    From the album: Nautiloid’s Eurypterids and other Silurian fossils

    Eurypterus remipes partial cephalon Upper Silurian Bertie Group Fiddlers Green Formation Phelps Member Herkimer County, New York Collected 8/22/20

    © Owen Yonkin 2020

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