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  • Annelids
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  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

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  1. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends September 9th. Be sure to vote in our other FOTM poll, HERE 1. Annularia radiata leaf whorls - Francis Creek Shale (Pennsylvanian) - Grundy Co., Illinois 2. Millipede - Francis Creek Shale (Pennsylvanian) - Grundy Co., Illinois 3. Ophiura sp. brittlestar arm segment - Cretaceous, Del Rio Formation - Travis County, Central Texas 4. Shimanskya postremus cephalopo
  2. Again, here is another invertebrate I have not been able to identify. Either way, my original guess was a trilobite pygidium, until I reviewed the fossil under different lighting, and then saw that it matched no known trilobites from this formation. So I am at a loss here. It is Pridoli, Silurian. For anyone who is interested, this came from a recent excursion to the Leighton Formation. It was found in a layer that contained only Chonetes bastini brachiopods and a few ostracods - with some possible fish bits. In the pictures below, the fossil is shown und
  3. The winner of the July 2021 IPFOTM goes to... Architarbus rotundatus spider - Pennsylvanian, Francis Creek Shale - Mazon Creek, Morris, Illinois Congratulations to @flipper559 !!!
  4. 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.
  5. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends August 9th. Be sure to vote in our other FOTM poll, HERE 1. Mucrospirifer thedfordensis brachiopod - Mid Devonian, Hungary Hollow Formation and Arkona Shale (350 Ma) - Rock Glen, Arkona, Ontario 2. Epihoplites compressus ammonite - Lower Cretaceous, Gault Clay. Albian Age - Cap Blanc Nez, France 3. Petrified wood, Family Lauraceae (laurel tree) - Late Cretaceous, Maastrichtian age, Dawson Formation (70-66 Ma) - A
  6. 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.
  7. The winner of the June 2021 IPFOTM goes to... Craspedites mosquensis ammonite - Jurassic, Volgian (Tithonian), Craspedites nodiger ammonite zone - Samara Oblast, Kashpir, Russia Congratulations to @RuMert !!!
  8. The winner of the May 2021 IPFOTM goes to... Tumidocarcinus giganteus crab - mid-Miocene - Canterbury, New Zealand Congratulations to @mamlambo !!!
  9. The winner of the April 2021 IPFOTM goes to... Cricket (Superfamily Grylloidea) & Damselfly (Suborder Zygoptera) - Eocene, Green River Formation - Colorado Congratulations to @Crusty_Crab !!!
  10. 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 !!!
  11. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends July 9th. Be sure to vote in our other FOTM poll, HERE 1. Eurypterus remipes sea Ssorpion - Silurian - New York 2. Crussoliceras divisum ammonite - Early Kimmeridgian, Late Jurassic - Upper Danube Valley, Baden-Wuerttemberg, Germany 3. Sinespinaspis markhami trilobite - Cotton Formation, Late Llandovery (early Silurian) - Cotton Hill Quarry, Forbes, NSW, Australia
  12. Check the entries below carefully and cast your vote! PM me if you notice any errors with the entries. The poll ends June 9th. Be sure to vote in our other FOTM poll, HERE 1. Echinocaris punctata phyllocarid (dual valves) - Middle Devonian, Moscow Formation, Hamilton Group - Deep Springs Road Quarry, Lebanon, New York 2. Mecaster lusitanicus echinoid - Tentúgal Fm, Cenomanian (C level) - Montemor-o-Velho, Coimbra, Portugal 3. Pedioceras sp, ammonite - Early Cretaceous, Paja Formation - Villa de Leyva, Colombia
  13. This Missourian is headed out to the Late Devonian of western New York state and Pennsylvania this coming week and hoping for a little help from y'all on localities for eurypterids and the sponge Hydnoceras. Are Clarke's (1920) Hydnoceras localities at Brown Hill (near Cohocton, NY) and Irish Hill (near Bath, NY) still productive and accessible? Are Ehlers' (1935) eurypterid localities at Bush Hill (near Smethport, PA)? Or are there other spots I should be checking out? I understand that the Trimmers Rock Formation in the vicinity of Bloomsburg, PA, is also worth a look for eurypterids, but I
  14. Trevor

    Exogyra and Cliona

    From the album: New Jersey Late Cretaceous

    Exogyra covered in some sponge, maybe Cliona.
  15. 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
  16. 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.
  17. 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
  18. 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
  19. The winner of the February 2021 IPFOTM goes to... Anataphrus vigilans trilobite - Elgin Member, Maquoketa Formation (Late Ordovician) - NE Iowa Congratulations to @connorp !!!
  20. 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.
  21. 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 !!!
  22. 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
  23. 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
  24. 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):
  25. 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):
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