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Categories

  • 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
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  • Chordata
    • Amphibians & Reptiles
    • Birds
    • Dinosaurs
    • Fishes
    • Mammals
    • Sharks & Rays
    • Other Chordates
  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

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  1. Trevor

    Exogyra and Cliona

    From the album: New Jersey Late Cretaceous

    Exogyra covered in some sponge, maybe Cliona.
  2. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends May 9th. Be sure to vote in our other FOTM poll, HERE 1. Ecphora quadricostata gastropod - Late Pliocene Epoch, Yorktown Formation, Rushmere Member - Virginia 2. Atactotoechus fruticosus calcareous bryozoan colony - Middle Devonian (Givetian) - New York 3. Spiriferid brachiopod with athyrid brachidium - Mississippian, Burlington Formation - Henry County, Missouri
  3. gdsfossil

    Guadalupe Mountains National Park

    I found this a few years back near (but not in) Guadalupe Mts National Park. Is it a sponge, coral, algae, or something else? Piece is about 6 inches across. Thank you for your help.
  4. Hello, I purchased this specimen a few months ago at an estate sale. No label, no information. The fossil has been split lengthwise, polished, and the interior void space looks to have been filled with a sort of yellowish epoxy. Each half measures approx. 4.75 cm long x 2.5 cm across. Original depth before cutting looks to have been around 2.5 cm. I believe it is a Turritella, in a distinctive layered, calcareous concretion. I was able to find a photo of an almost identical specimen on a college professor's website, but I was unable to get additional information after following
  5. The winner of the March 2021 IPFOTM goes to... Romaniceras mexicanum ammonite - Upper Cretaceous (Turonian) - Blue Hill Member, Carlile Shale - Sandoval Co., New Mexico Congratulations to @PFOOLEY !!!
  6. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends April 9th. Be sure to vote in our other FOTM poll, HERE 1. Fern plate - Carboniferous, Llewellyn Formation - Schuylkill County Pennsylvania 2. Ampullina bulbiformis gastropod - Cretaceous, Grabenbach-formation? - Haspelgraben, Gams near Hieflau, Styria, Austria 3. Colonial coral - Cretaceous, Grabenbach-formation? - Haspelgraben, Gams near Hieflau, Styria, Austria 4. Macrocrinus
  7. The winner of the February 2021 IPFOTM goes to... Anataphrus vigilans trilobite - Elgin Member, Maquoketa Formation (Late Ordovician) - NE Iowa Congratulations to @connorp !!!
  8. This fossil was found by a friend near Falls of the Ohio, so presumably Middle Devonian but who knows. The hollow elements are straight, with angular cross-sections, and seem to be organized in alternating orientations. Any and all insights appreciated. The coin is an American quarter dollar, about an inch (24.26 mm) in diameter.
  9. The winner of the January 2021 IPFOTM goes to... Acanthotelson stimpsoni shrimp - 307 million years old, Pennsylvanian, Francis Creek Shale Layer (307 Ma) - Mazon Creek, Grundy County, Illinois Congratulations to @flipper559 !!!
  10. I had the opportunity to sample some fossils at a friend of a friend's ranch in the Glass Mtns. Brewster Co, Tx. At first I thought this was a crinoid but I'm leaning towards receptaculitid. From the Word Fm., Permian
  11. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends March 9th. Be sure to vote in our other FOTM poll, HERE 1. Radiolitid rudist - Campanian / St. Bartholomä-formation, Gosau-group, Eastern Alps - St. Bartholomä, Styria, Austria 2. Anataphrus vigilans trilobite - Elgin Member, Maquoketa Formation (Late Ordovician) - NE Iowa 3. Spathites puercoensis ammonite - Upper Cretaceous (Turonian), Carlile Shale - Sandoval County, New Mexico
  12. Mainefossils

    Possible fossil coral

    Fossil forum, This is another fossil from the Leighton Fm haul. I was thinking coral, because of the external mold of it, but the internal mold has interesting segments. Unfortunately, the internal mold is missing a piece. Here are some pictures (internal mold on the left, external on the right):
  13. Mainefossils

    Unknown invertebrate fossil

    Fossil forum, Good morning. I recently found an interesting fossil invertebrate. It was found at the Leighton formation, Maine. I was thinking possible coral, but the segments on it were perplexing. Trilobite didn't seem to fit because of the size and the shape of the segments. Any help would be appreciated. Here are some pictures of it (the internal mold is on the left, external on the right):
  14. Mainefossils

    Invertebrate fossil

    Fossil forum, I recently found an interesting fossil. I have not come across anything like it before, and was wondering if you could help me identify it. It is from the Leighton formation, in Maine. Here are some pictures of it.
  15. 2020 INVERTEBRATE/PLANT FOSSIL OF THE YEAR (IPFOTY) The winner of the 2020 IPFOTY goes to... Belotelson magister shrimp - Francis Shale, Middle Pennsylvanian (~307 Ma) - Mazonia South (Pit 11), Illinois Congratulations to @stats!!!
  16. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends February 9th. Be sure to vote in our other FOTM poll, HERE 1. Prionocyclus hyatti ammonite - Upper Cretaceous (Turonian), Blue Hill Mbr. of the Carlile Shale - Sandoval County, New Mexico 2. Amoeboceras serratum ammonite with siphuncle visible - Jurassic, Upper Oxfordian (160 Ma) - Bronnitsy, Moscow Oblast, Russia 3. Acanthotelson stimpsoni shrimp - 307 million years old, Pennsylvanian, Francis Creek S
  17. jikohr

    Mazon Creek id help

    Hey everyone, I recently got a bunch of stuff from Mazon Creek, which I have zero experience with. I would really appreciate some help in identifying this stuff, so here's a few of the things. Everything is from Mazon Creek Pennsylvanian in siderite concretions, the scale bar is in mm. The picture labels are what came to mind looking at them. Thanks Everyone!
  18. The winner of the November 2020 IPFOTM goes to... Heterosalenia sp. nov. echinoid (new species currently being described) - Lower Glen Rose Formation, Lower Cretaceous (Albian) - Comal County, Texas Congratulations to @JamieLynn !!!
  19. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends January 9th. Be sure to vote in our other FOTM poll, HERE 1. Alethopteris sullivantii fern frond - Francis Shale, Carboniferous - Pit 2, Wilmington, Illinois 2. Periarchus pileussinensis sand dollar - Late Eocene, Tivola Limestone (~34 Ma) - Perry, Georgia 3. Culicia parasitica (coral) + Celleporaria (bryozoan) - Paleogene - West Russia, Kaliningrad area, Svetlogorsk
  20. locutus9

    Silurian Invertebrate Needs ID

    These are two fossils of the same species collected at the Long Pond Road Site along the Erie Canal in Greece, New York. They are from the middle Silurian Rochester shale. These were collected last winter, and I have since been unable to identify them. Both are no greater than 3cm in length. Some interesting fine detail is visible on the first specimen. The American dime is 1.8cm in diameter.
  21. Gramps

    Invertebrate ID help requested

    All, This is my first post, although I have been reading with interest for some time. As I approach retirement, I find myself returning to the hobbies of my youth, including fossil hunting. I found these fossils in a single rock in Northeastern Oklahoma (a few miles South of Tulsa). It came from demolished concrete structure, so I do not know where the rock originated. The rock is very hard and very fine grained. It reminds me of chert or a very hard limestone. The first photo shows one end of the rock, where the closeup photos were taken. The fossil in the upper left is about one inch (2
  22. Here is a picture of a Bivalve imprint I found whilst in a Creek in Western Wake County. I was in the Triassic Basin and they have fossils dating back around 230 Ma ± 2 ma. It was part of the Carnian Stage of the Triassic part of the bigger Newark Supergroup. I presume it is a freshwater genus but I don't hear much about freshwater Bivalves when it comes to Triassic fossils.
  23. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends December 9th. Be sure to vote in our other FOTM poll, HERE 1. Siderastrea crenulata? colonial coral - Miocene, Langhian/Badenian - "Muschelgraben", Pöls, Styria, Austria 2. Eutrochocrinus christyi crinoid calyx - Mississippian, Burlington Formation - Henry County, Missouri 3. Odontopleura ovata trilobite - Silurian, Ludlow - Prągowiec Ravine, Poland 4. Heterosalenia
  24. The winner of the October 2020 IPFOTM goes to... Craspedites subditus ammonite - Jurassic, Upper Tithonian (Volgian) - Undory, Ulyanovsk Oblast, Russia Congratulations to @RuMert !!!
  25. Dear all, Recently I purchased a "Nostoceras Malagasyense" Heteromorphic Ammonite from an online platform. Initially, I didn't question the authenticity of the specimen, as the seller seems to have quite a few Cleoniceras ammonites for sale (which are clearly genuine). However for this piece I'm quite unsure if it is truly authentic, and would like a second opinion. I understand that there is an Export Ban for fossils from China, but to my understanding that's for Vertebrate fossils (ammonites are invertebrates). My main concerns are: Is it a legitimate fossil
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