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Found 29 results

  1. I was fortunate to be able to take two trips recently to the Marmaton group in Northern Missouri and wanted to share my trip report with the forum. It's hard to find information on the Marmaton in Missouri, and I struggled with the geology and understanding what members within the Marmaton I was seeing, but I had a great time non the less. I grew up in this region and have some ‘insiders’ information on a few spots I wanted to check out just from spending time running around the countryside as a kid. The first was in a local creek in the township I grew up in that contains concretions we called ‘dragon eggs.’ I was curious if they would contain fossils so on my first trip in early September I committed to breaking one open. First, here are a few pictures of the site: I was able to break this one open, and it did contain fossils! The blue line on the lower left marks a very thin layer of limestone that the concretions seem to form right above. Here are a few more pictures of the concretions for reference. A particularly large one: And one that is just cracked: Unfortunately for me only the very first one I broke had any fossils. I spent several hours hoping another would reveal some but luck was against me at that point I guess and I failed to find a single one. Frustrated I spent the remainder of the evening searching through the fallen limestone exposures. The next post will contain some of the specimens from the single fossiliferous concretion and the limestone.
  2. 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!
  3. Hi Everyone, I've been working through quite a bit of shale from the Stark member and have a specimen I would like your thoughts on. My brain sees a crustacean claw due to the shape, but I think its more likely that it's a fin. What do ya'll think I have here? Dimensions are 1 cm by 1 cm. My "holding the phone camera to my microscope lens" method isn't working so well, so here's a rough outline of the shape: And the counterpart from the split Thanks,
  4. Fossil imprint of???

    So when I found the encrusted bivalve, I found this in the same roadcut in what I believe is Bethany falls limestone in Kansas City. It has define spikes/spines/other with softer margins and I simply don't know. there are no other complete fossils near it but there is this imprint-whatever that is ?? Any help or thoughts, as always, appreciated! Thanks! Bone
  5. Placoderm Fish with Fin?

    I found this fossil in Devonian rock in Johnson County, Iowa. I think it is a fossil of a placoderm fish, and I think it has a "fin" next to the quarter in the photo. The fin would be coming out of the placoderm plate at a perpendicular angle, which would make sense, but I have never found a fin before. I will attach a close-up photo of the "fin" below. Am I on the right track or is this something else? Thank you! Ben
  6. Hi All! This peculiar find reminds me of a type of marine mammal fin upon first sight. Haven’t come across anything remotely like it before. -20cm long, 15cm wide -found on a beach in Haida Gwaii (close to Alaska) Thank you!
  7. Evolution From Fin to Foot

    Article on new structural findings of Tiktaalik and other fish/tetrapod fins/feet https://m.phys.org/news/2019-12-fish-fins-evolved-transition.html
  8. Here is another very recent discovery in the dry creek bed. It appears to be some sort of fish fin to my very amateur eyes. Can someone please confirm this or tell me what it is if I am wrong? Although it is not clear in the images, the markings go all the way to almost the 12:00 position. It is not a stain and does not wash off. There is a crystal vein right above it that runs completely through the rock. Thank you for your time. This was found outside of Willow Springs, Howell County, Missouri, USA
  9. Body segments and a fin?

    Hi, this is a impression fossil my son found. We are trying to ID it. Looks like it was found in sedimentary rock. Looks like it has either modified scales made of chitin or body segments and it has a fin. We can’t seem to ID this fossil! Help!
  10. Hello, I am new the this site and a part time collector. I own items that I have found in different areas of the state and others I have purchased from other areas. My collector has natural objects ( Animal Parts) and man made ( Points). I know some, but I am not familar with the different classifications of fossils. I am not sure if this piece is a agatized fossil or some type of concretion. All comments are appreciated. I have some property in eastern Newberry county. I saw this rock in the creek and brought it home with me. After I cleaned the dirt off, I noticed it does have form and textures as well as 2 different prostrutions that look and feel different from the rest of the object. I have other fossils, like Mammoth jaw bones with teeth that are lighter than this object and large petrified logs that seem similar to this object in question. Please take a look and feel free to ask questions. Thanks in advance!
  11. Is this a foot, claw, or fin

    I went out to Ram brook in New Jersey yesterday and came acrossed this little fossil. But not sure what it is.
  12. Leedsichthys Problematicus

    From the album Sharks and fish

    Small section of a fin ray from a Leedsychthys Problematicus tail. About 2" Lower Ox. Clay, Callovian middle Jurassic. 160 mya Hampton Lakes Peterborough, Cambs, UK
  13. Plesiosaur bone

    Hello i was offer this Plesiosaur bone and was said to be a fin just wondering could it be from one ? Its size is 30 cm
  14. Please Help?

    I'm pretty sure its a caudal fin of some prehistoric fish, but I'm not sure. Anybody know?
  15. Spinosaurus sail?

    Ok, so this is supposed to be a spinosaurus vert, one with part of the sail. At first glance it seems perfect, but upon further study, while trying to place it on spinosaurus skeletons, it doesn't seem to match any exactly. For one thing, spinosaurus sails, at least in the relatively insignificant amount of individuals on display, sail bones that don't go any higher than this one(it appears this is a fully intact sail vert), don't seem to get as wide. And the ones that do, then continue up and get thinner. There ARE similar shaped "sail" bones, at the transition to the neck, and tail, but those aren't as tall as this one. The main bone itself appears to be from the tail, or rear part of the sail, but....well, anywhere that one part of the bone fits well, doesnt seem to match the rest of it very well. Sadly I can't find any good images of many of each type of vert, and anywhere that has good close up views of verts, only have 1 or 2 of any type, which isn't good enough to come to any sufficient conclusions. spinosaur fossils(specifically verts), seem to be something they work with a lot, so I would be very surprised if along with all the other spinosaurus verts they get in, they would end up with the sail spine of some other animal. And if somehow so, then not realizing it.
  16. Fish Fin?

    I found this yesterday and wasn't sure if it was possibly a fish fin. You'll see there is some glacial grinding on the face of the rock but the lines are parallel. Down in the deep groove, the more distinct lines are very small and close together on the left, then fan out and get larger to the right. Any comments would be appreciated. Thanks!
  17. What is this? Is it a flipper?

    Hi there, I'm new to fossil hunting and came across this today in the newly surfaced coast land mass at Kaikoura, New Zealand. It's quite large; at least a foot long. Move read about the fossils of ancient dolphins being found in the area and was wondering if there was any possibility of this being linked to those finds? any help in identifying it would be greatly appreciated!
  18. Hi. Stopped for road break and saw this in the May river flat not far from derby. Has a definite fin structure. Keen to find an expert and have it assessed properly. Wondering if it is a pectoral fin and plate from an armoured fish g Mac
  19. Please Help ID

    My granddaughter is in 4-H Geology and has found these two items and no one has been able to ID either one. She found both items at a local sand pit. The first one was in one piece until she accidently dropped it. When it landed it broke open and the white areas were inside. One side feels kind of chalky and the other is feels pretty smooth but has ridges. Any help would be greatly appreciated as she is trying to get her exhibit box ready for the Fair. Thank you, Mari
  20. brachiopod, fin, or wing?

    This doesn't look like most shells I see, kinda looks bony. Not sure if the imprint on top is part of it. Kidding about it being a wing but the shape was perfect! North texas Eagle Ford creek. And for those who will suggest I put it on solid surface in bright light and back up I have included that image.
  21. NSR160530 132

    From the album North Sulphur River 160529

    Partial Fish specimen. Upper portion showing probable pectoral fin. Cretaceous Ozan Layers of river bed

    © Mitchell Moore

  22. Unknown Secimen--Wing or Fin?

    From the album Laha

    Uknown wing/fin Texas, Yorktown Devonian/Carboniferous?

    © ©

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