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  1. historianmichael

    Cidaris sp. Spine

    From the album: C&D Canal Micro Fossils

  2. Mudlark

    Looks like a spine but it isn't

    My guy found this while searching with a 365 nm uv lights for sodalite on a beach in Algoma WI. Lake Michigan. Can anyone offer a place for me to look for more information on what it could be? It is a 6 inch by 6 inch limestone rock. The object it 6 inches long and almost an inch wide. The backside of the rock has no fossil presence. The picture with the blue in the background is a 365 nm shortwave uv light. Thank you for looking
  3. Karson

    help id fossils

    Really need help identifying these
  4. Samurai

    Fish Spine Fossil? ( Missouri )

    Location is in Missouri The area is dated to the Pennsylvanian Formation: Muncie Creek Shale I was cracking Phosphatic concretions and this baby popped out! I was excited and thought I should share and ask what it is! I believe it is a cartilaginous fish spine, but I have little knowledge in such topics. Ps Information on good glue to glue together the cracked piece is welcomed!
  5. Samurai

    Dorsal Fin Spine Fossil

    From the album: Fin Spine Fossils

    Even Though it is Poorly preserved it measures just about 12.7cm there is not an ID on this one, although I assume it to be from a Hybodus or a large Ctenacanthus since this is found in Pennsylvanian aged rock There are Phosphatic nodules present in this limestone chunk suggesting it is from the formation: Muncie Creek shale
  6. Top Trilo

    Trilobite Rarity

    Elrathia trilobites are very common, they're small, have no spines, and have a lot of preserved molts. On the other hand you have rare trilobites with spines covering its whole body or trilobites that exceed half a meter. These are not as common, but spines and size seem to be an evolutionary advantage. Why are the trilobites that seem to have the best chance of survival the rarest ones? Or is it just a marketing play?
  7. heZZ

    Caudal Vertebra

    what dinosaur?
  8. Harry Pristis

    RAY DENTICLE PATHOLOGY

    From the album: TEETH & JAWS

    Two dermal denticles (literally, "skin teeth") typically from the back and tail of Mio-Pliocene skates (Rajidae) and stingrays (Dasyatidae) from the Peace River in Florida. One is normal, the other is pathological. Dermal denticles have the same embryological origin as the teeth in the ray mouth. These are teeth that have migrated to the skin. (This image is best viewed by clicking on the button on the upper right of this page => "other sizes" => "large".)

    © Harry Pristis

  9. So I have seen many pictures of sea urchin spines and it looks like one. And I really cannot id species and stuff that I'm not sure are fossils. Is there a Good website or book? Many times I cant find anything to make a id of a species or fossil. Many of you guys know how to id fossils. How did u guys learn? I have alot of maybes and many fossils to id the species. I also get confused with flint fossils some I find have holes that are the same size and depth - maybe sponge? But cant find anything online. And the fossils near me are at beaches. The o
  10. Samurai

    Shark Dorsal Spine? ( Missouri )

    Hello and good evening! I have passed this fossil a few times and it resides in a large limestone slab. I believe it could be a spine due to presence of Chondrichthyan teeth in the area and how it appears to come to a point. For reference the teeth I have found include teeth from Petalodontiformes, Eugenodontida, and other Chondrichthyans. I will note I have found some petrified wood in the area, but none in a limestone matrix so it could be a Calamite. Location: Missouri Time period: Pennsylvanian Formation: Muncie creek shale member
  11. My daughter found this at a beach in South Carolina USA . The ruler is in inches that is all I had. Please help us figure out what this is.
  12. My youngest son found this spine on the Conecuh River, Covington Co., AL Geology: Lisbon Fm. (basal), Eocene, Late Ypresian My other two kids also found spines, but not this nice. I, of course, was the only one who didn't find one! Anyway, I wanted to show it to you all.
  13. Pterygotus

    Happy with my shark spine

    Hi everyone , Just thought I’d like to share this find I made recently. It’s a nice. Hybodont cf. hybodus shark spine from the Rhaetic, Westbury Formation of England. It measures about 12cm. Took about 30mins to an hour extraction and about three hours repair so far. Still haven’t fully repaired it yet. It’s like a jigsaw without the cover! Biggest one I’ve ever found!
  14. BoneAndTooth

    Fish Spine or Jaw bone Maybe?

    I have found several of these fossils over the last few months and would love some help identifying them. Most are small, less than 1 inch long and difficult for me to photograph with any real detail. But the last one I found is much larger by comparison. It's just a fragment but it's about an inch and a half long and 1/2 inch wide. They all taper from one end to the other and they all have raised bumps down one edge and a deep groove along the other edge. The flat sides are textured. They were all found in a creek in Southwest Alabama, US alongside Eocene shark, ray and sawfi
  15. Jjlegend

    Spine?

    I found this in snowdonia national park up mount tryfan
  16. Bonehunter

    Echinoid spine or crab leg?

    So-this collected yesterday in the Kansas City area again, but not sure what "layer" as the road cut was a jumble of mixed rock. My first thought was sea urchin spine, but I see only one row of spines, similar to what you see on many crustaceans; even though it is half-buried I thought sea urchin spines had generalized "points"?.... thanks again for all your patience reviewing these! Bone
  17. Found this small (presumably fish) bone fragment last weekend while at my usual Pennsylvanian (Upper Carboniferous) limestone roadcut in northern IL. Not really sure what to make of it. It's small, not even 1cm long. My only guesses were either a partial jaw of some sort, or maybe a small fragment of a spine. Any thoughts? @jdp @Fossildude19 @deutscheben
  18. Hi Everyone, I recently broke open a rock on my property and found this interesting fossil. I have tried to identify it but can’t find anything that looks similar. I know it's a long shot for an ID, but more knowledgeable thoughts on what it could be would be very much appreciated. It was found in Missouri, Jackson County, north of highway 350, south of highway I-70, east of 435, and west of 470. The rock was dug out when digging a basement and subsequently cracked apart and the fossil was within. Basement location is atop glaciated ridge. I am guessing (serious amateur here) that
  19. belemniten

    Hybodus fin spine

    From the album: Triassic vertebrate fossils

    This is a 12 cm long Hybodus fin spine from a triassic "Bonebed" in a quarry in southern Germany (Baden-Württemberg). Its until now my best preserved fin spine from there. Some more pictures:
  20. FossilsAnonymous

    Jaw or Spine

    I’d would love some help identifying what this is - I believe it’s a modern fish jaw of some kind but wouldn’t mind being persuaded that it’s a fossil! (Tooth Tap Test was inconclusive- sometimes glass, sometimes plastic) Since it’s likely modern, does anyone know what kind? 4 inches long exactly, about 1/4 inch at the widest point. Smooth on one flat side, a deep groove on the other. Wickedly sharp curvy teeth are part of the bone. Found at Purse on Sunday. -Our Fossil Group has conflicting ideas on this piece; catfish spine, gar jaw, snake mandible, bird spine... -It seems m
  21. Hi all, I have another fossil here for your inspection please. It seems to be a Spinosaurid partial neural spine but I cannot be sure. @Troodon @LordTrilobite
  22. Hi all, I acquired a partial Spinosauridae caudal spine recently from the Kem Kem Beds. However, I was told that this is a dinosauria indet. rib. The digger who provided me the fossil is experienced and trustworthy. Still, I would like to hear your thoughts on this fossil. Thank you. EDIT: Two others suggested that this is part of a scapula
  23. BoneInRaro

    Bones Found in Ocean Cave

    Hey guys, I've found some bones and want to see if anyone is able to identify them for me. So while snorkeling off the coast of Rarotonga in the Cook Islands I found a spine of some sort. It was resting inside the opening of a cave. The length of spine that was visible to me was about half a metre maybe just over half a metre long. Each single vertebrae was about 20cm wide. Please view the photo provided. (Sorry I'm having trouble uploading the photo, I'm gonna try again in the morning..) Any help or input is greatly appreciated thank you
  24. Hello! Help, please. What it could be - tooth, bone, sharks dermal denticles...? Western Ukraine (Neogene/Cretaceus). Thanks in advance!
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