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

Found 173 results

  1. The winner of the September 2020 IPFOTM goes to... Triarthrus eatoni trilobites - Late Ordovician, Lorraine Group, Frankfort Shale - Oneida county, New York Congratulations to @Al Tahan !!!
  2. 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. Composita sp. brachiopod steinkern with internal (athyrid) spiralia brachidium - Burlington Formation, Mississippian - Henry County, Missouri 2. Pentremites sp. blastoid - Glen Dean Formation, Upper Mississippian - Grayson County, Kentucky 3. Comatulid crinoid - Glen Rose Formation, Cretaceous - Bandera County, Texas 4. Triarthrus eatoni trilobites - Late Ordovician, Lorraine Group, Frankfort Shale - Oneida county, New York
  3. Cretaceous Crab/Lobster?

    I found these fragments of something crabby on my last trip to the North Sulphur River in Texas. They were partially exposed in one of the red bed layers of the Ozan Formation, and were so delicate that they started to crumble when I extracted them. I saved the more whole and identifiable pieces. They're a kind of muddy yellow color, with maybe some hints of the original pigmentation in the blue areas. The red beds tend to either turn fossils black (when they're phosphatized) or a dusty red, so this was quite an unusual find for me. The closest to an ID I've been able to get so far is some sort of lobster like an Enoploclytia, but other than that I'm unsure. Any help with an ID would be appreciated, as would any advice as to how I should go about preserving the fossils to make them more durable, as they are still extremely fragile.
  4. The winner of the August 2020 IPFOTM goes to... Thresherodiscus ramosus edrioasteroid - Ordovician, Bobcaygeon Formation - Goat Island, Ontario Congratulations to @Kane !!!
  5. 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. Trachyscaphites spiniger ammonite - Cretaceous, Ozan Formation - North Sulfur River, Texas 2. Myriacantherpestes ferox millipede body section - Upper Carboniferous, Pennine Middle Coal Measures Formation - South Yorkshire, UK 3. Anorthopygus texanus echinoid - Cretaceous, San Martine Formation - Culberson County, Texas 4. Thresherodiscus ramosus edrioasteroid - Ordovician, Bobcaygeon Formation - Goat Island, Ontario 5. Hemicidaris sp (?) echinoid - Upper Jurassic - Cesaredas, Portugal 6. Eurypterus remipes eurypterid - Upper Silurian, Bertie Group, Fiddlers Green Formation, Phelps Member - Herkimer County, New York 7. Razor Clam - Cretaceous, Ozan Formation - North Sulfur River, Texas 8. Solenochilus sp. nautiloid - Late Pennsylvanian, Conemaugh Group, Glenshaw Formation, Brush Creek Limestone - Pennsylvania 9. Euphoberia sp. (spiny millipede) - Middle Pennsylvanian, Francis Creek Shale - Mazon River, Illinois
  6. The winner of the July 2020 IPFOTM goes to... Thaleops ovata tilobite - Platteville Formation, Ordovician - Grant County, Wisconsin Congratulations to @minnbuckeye !!!
  7. 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. Thaleops ovata tilobite - Platteville Formation, Ordovician - Grant County, Wisconsin 2. Composita sp. cf. C. pikensis brachiopod with complete spiralia - Mississippian (Lower Burlington Formation chert) - Henry County, Missouri 3. Rhinocaris columbina phyllocarid - Middle Devonian (Givetian), Hamilton Group Moscow Formation Windom Member - Deep Springs Road Quarry, Lebanon, New York 4. Hippurites nabresinensis rudist - St. Bartholomä-formation, Gosau-group (Campanian) - St. Bartholomä, Styria, Austria 5. Almucidaris falgarsensis echinoid - Terradets Formation (Upper Campanian) - Barcelona, Spain (SE Pyrenees) 6. Florissantia sp. cf. F. quilchenensis flowers - Naches Formation, Late Eocene and Oligocene - Central Washington
  8. The winner of the June 2020 IPFOTM goes to... Promopalaester bellulus sea star - Late Ordovician, Salona Formation - Pennsylvania Congratulations to @historianmichael !!!
  9. help id this fossil

    Lots of rocks with tiny fossils. This was on one of these rocks. Most of the fossils are Crinoids but this looks like something else Any ideas?
  10. 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. Phymosomatoida indet. echinoid - Upper Jurassic, mid-Tithonian (Volgian), Dorsoplanites panderi zone - Moscow, Russia 2. Atrypa sp.? brachiopod steinkern with inner support - Mississippian - Henry County, Missouri 3. Placenticeras placenta ammonite - Late Cretaceous, Merchantville Formation - Monmouth County New Jersey 4. Metacoceras sp. nautiloid - Kasimovian, Missourian, Pennsylvanian, Glenshaw Formation - Western Pennsylvania 5. Promopalaester bellulus sea star - Late Ordovician, Salona Formation - Pennsylvania 6. Manticoceras sp. goniatite - Late Devonian, Frasnian - Lompret, Belgium 7. Schinoxylon sp. (petrified pepperwood tree) - Eocene, Green River Formation - Blue Forest, Wyoming 8. Amphilichas halli trilobite - Upper Ordovician, Liberty/Whitewater Formation - Brookville, Indiana
  11. Gastropod or something similar?

    Hey again, this is a very tiny ~.5cm shell that I found some time ago at the regular road cut at the Lost River exposure of the Mahantango Formation. I would guess it’s a Gastropod or something similar but if it could be narrowed down any further I would be elated. Thanks guys!
  12. The winner of the May 2020 IPFOTM goes to... Sinosura kelheimense brittlestars - Upper Jurassic - Hienheim Quarry, Germany Congratulations to @David !!!
  13. 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. Trigonia sp. bivalve with calcite - Upper Cretaceous (75-90 Ma) - North Sulfur River, Delta County, Texas 2. Esconites zelus polychaete worm - Francis Creek Shale, Mid Pennsylvanian (307 Ma) - Braceville, Ilinois 3. Holcospermum seed and Sphenophyllum - Late Carboniferous, Pennine Middle Coal Measures Formation - South Yorkshire, UK 4. Clypeaster sp. echinoid - Miocene (Burdigalian) - Sesimbra, Portugal 5. Sinosura kelheimense brittlestars - Upper Jurassic - Hienheim Quarry, Germany 6. Trochactaeon giganteus gastropod with fragment of coral colony - Upper Santonian/Lower Campanian - Breitenbach, Kainach bei Voitsberg, Styria, Austria 7. Uperocrinus pyriformis crinoid calyx - Burlington Formation (Mississippian) - Henry County, Missouri 8. Torynomma quadrata crabs - Allura Mudstone (Cretaceous, 105 Ma) - Queensland, Australia 9. Kettneraspis tuberculata trilobite - Lower Devonian, Kalkberg Formation, Helderberg Group - Schoharie Co., New York 10. Strotocrinus glyptus crionoid calyx - Mississippian, Upper Burlington Limestone - Southern Iowa
  14. The winner of the April 2020 IPFOTM goes to... Arbacia improcera echinoid - Pliocene, Yorktown Formation Zone - Craven County, North Carolina Congratulations to @sixgill pete !!!
  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. Lepidostrobophyllum seed bract - Pennsylvanian / Francis Creek Shale - Mazon Creek, Illinois 2. Gastropod steinkern covered with calcite - Cretaceous - (75-90 Ma) - North Sulfur River, Delta County, Texas 3. Isotelus gigas trilobite - Middle Ordovician, Trenton Formation - Herkimer county, New York 4. Triarthrus eatoni trilobite - Middle Ordovician, Trenton Formation - Herkimer county, New York 5. Ectenocrinus simplex crinoid - Ordovician, Cincinnatian Series, Edenian Stage, Kope Formation - Pendleton County, Kentucky 6. Foraminifera - Pennsylvanian, Winterset Limestone - Kansas City, Missouri 7. Clypeaster sp. echinoid - Miocene (Burdigalian), Calcarenitos e margas da Fonte - Sesimbra, Portugal 8. Arbacia improcera echinoid - Pliocene, Yorktown Formation Zone - Craven County, North Carolina
  16. Worm Borings?

    Hey everyone just wanted to check in with you all and see how you are doing. I also wanted to inquire about these Worm Borings/Concretions, and what our members consensus might be. Maybe our resident concretion collector @Ruger9a would be able to help me out. Anyway, here are the pictures: Here is a photo of the excavation site:
  17. Hello, I'm looking for an ID on a relatively well preserved marine fossil found in a south florida gravel bed with many bivalve and brachiopod fossils nearby. Any help would be much appreciated. Thanks in advance.
  18. 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 (2.5 cm) in length and about one-half inch (1.3 cm) in height. The second photo shows a close-up of this fossil. I am nearing the file size limit, so I will attempt to reply to this topic with additional photos. I would be grateful if forum members can help me with identification. Best wishes.
  19. The winner of the March 2020 IPFOTM goes to... Scolecodonts (maxilla/jaws) of polychaetes (Protarabellites or Oenonites & Ramphoprion) - Georgian Bay Fm, Upper Ordovician - Mimico Creek, Toronto, Ontario Congratulations to @Monica !!!
  20. 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. Palmoxylon sp. (fossilized palm) - Kirtland Formation, Upper Cretaceous - San Juan County, New Mexico 2. Venerid (bivalve shell) - 1.3 Ma, Pleistocene - North East Punta Cana, Dominican Republic 3. Conocardium cuneus (rostroconch) - Devonian, Amherstburg Fm - Ontario 4. Syringopora multattenuata (tabulate coral) - Bethany Falls Limestone Member within the Swope Limestone, Carboniferous - Kansas City, Missouri 5. Spiriferid brachiopod with internal spiralia - Mississippian - Henry County, Missouri 6. Rhizopalmoxylon sp. (palm root) - Kirtland Formation, Upper Cretaceous - San Juan County, New Mexico 7. Ostrea digitalina growing on Turritella partschi - Langhian/Badenian, Miocene - Wetzelsdorfberg-3, St. Josef, Styria, Austria 8. Sponge (Phylum Porifera, Class unknown) - Naco Formation, Pennsylvanian - North of Payson, A rizona 9. Bryozoan encrusted crinoid segment - Chainman Formation, Carboniferous - Utah 10. Abertella dengleri sand dollar - Hawthorne Group, Peace River Formation, Late Miocene - Peace River, Hardee County, Florida 11. Periarchus pileussinensis sand dollar - Tivola Limestone, Late Eocene (~35 Ma) - Perry, Georgia 12. Chlamys spillmani clinchfieldensis scallop with both valves - Tivola Limestone, Late Eocene (~35 Ma) - Perry, Georgia 13. Scolecodonts (maxilla/jaws) of polychaetes (Protarabellites or Oenonites & Ramphoprion) - Georgian Bay Fm, Upper Ordovician - Mimico Creek, Toronto, Ontario 14. Cunningtoniceras inerme ammonite - Middle Cenomanian, Cretaceous - Northern France 15. Unknown echnioid - Ozan Formation Red B eds, Cretaceous - North Sulphur River, Fannin County, Texas 16. Glyptocrinus deculatus crinoid - Fairview Formation, Cincinnatian Upper Ordovician - Maysville, Kentucky 17. Rhinocaris columbina phyllocarid - Hamilton group, Moscow formation, Windom Shale, Middle Devonian (Givetian) - Madison county, New York
  21. Friends- Thanks for your patience with my last couple of posts, these concretions are a carnival ride. I collected this delicate little (9mm) winged insect in 2010 at the Mazonia-Braidwood South Unit. Any thoughts on what ballpark I should be looking in for an ID? Some kind of damselfly, maybe? (Is it possibly newly-hatched with uninflated wings?) I appreciate your time.
  22. Ok. So, apparently I need my eyes examined... Thanks, everyone. Maybe I'll have better luck with invertebrates. I'll post more photos separately, but here's a preview:
  23. Hey everyone! This will be my first attempt at a trade in the TFF. Im offering a variety of fossils from the Price Creek Formation of Humboldt County, Northern California. This formation has been dated to late Miocene early Pliocene. As far as to what I’m looking for in this trade, I love all things Mollusca! Gastropods, Bivalves, Ammonites, Belemnites or Brachiopods, I’ll take them all. Invertebrates of any kind will strike my fancy though. The weirder the better. I’ve seen some Ram’s Horn Oysters that are awesome! I have no qualms about trading for these as a whole set, however shipping would be cheaper. I’m willing to ship anywhere in the United States, if your international I’m afraid that you’ll have to absorb that cost. I really appreciate all the knowledge that members have been forthcoming with sharing. Please pm me if your interested. -Nick
  24. Hey everyone! I’m starting this post as a continuation of this post: http://www.thefossilforum.com/index.php?/topic/102463-virtual-fossil-hunting-field-trip/ I’ve decided to start this new thread in prefer to better conform to the sites organizational structure and to serves as a more permanent home for my future adventures. So, if you haven’t already seen it, in encourage you to read it in order to catch up. In light of our current events I’ve decided to practice some self quarantine at my favorite fossil hunting location. The rocks here, the Rio Dell formation, represent an eastward trending embayment from the Pleistocene, overlain by orange conglomeratic sandstones called the Carlotta Formation, indicating and delta environment that fed into said bay. These have all been uplifted by the numerous and complex fault systems that Northern California is famous for. This site is easily accessible via a trailhead about 350ft above the beach.
  25. March 17th, 2020 Peace River

    I've spent the last few trips Socially separating on the Peace at Zolfo Springs. Yesterday I found some pretty interesting stuff. I've switched back to a 1/4 " screen for a while because the 1/2" and the extended shovel handle was killing me. As a result, I've gotten a ton more small shark teeth, but have been able to process a lot less material. This was the total take for Tuesday. The invertebrates are the most interesting I think. In the lower left corner is a juvenile Abertella aberti with some minor damage but an intact perimeter. I've got a question about the sea biscuit though. It is clearly a Ryncholampas sp., but which one? This is Hawthorne group, not Suwannee, so should I assume it's R. chipolanus? Close up pictures follow.
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