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Found 251 results

  1. I collected this little worn cephalopod in a stream in Peoria County Illinois. The area is primarily Patoka-Shelburn Formation Undivided (Pennsylvanian) but it wasn't found in-situ. I sectioned a piece for identification and the siphuncle seems large for the Pennsylvanian cephalopods known from the area. To my eyes it looks a lot like Actinoceras (which I guess would mean Ordovician) based on the position and size of the siphuncle. Does anyone have any other ideas?
  2. Shell Made its Own Pedistal

    From the album Delaware Fossils

    A Gryphea vomer bivalve made itself at home atop the internal mold of a tiny Baculites ovatus cephalopod. The whole thing is about 3 cm tall. Found in the Cretaceous spoils sands of the C&D Canal, Delaware
  3. Nautiloid

    From the album Delaware Fossils

    Eutrephoceras sp. Cretaceous C and D Canal Delaware City, Delaware Mt Laurel Fm.
  4. Hey guys, the first one actually doesn't looks like a cephalopod, maybe part of a trilobite (from the Baltic coast)? 2. This flint remembers me of something from the bottom of the sea. Any Idea? Thanks in advance!
  5. Nautiloid

    Hello all, I don't know much about cephalopods and really could use your help. I found this small rock with the tiny nautiloid specimen in the banks of the Rock River in Ogle county, Illinois. The area's bedrock is Middle Ordovician (Mohawkian, Ancell Group). I believe it belongs to the order of the Actinoceridae. The "camerae" end in double pointed arches instead of a straight edge, just as Wikpedia's illustration shows in the 2nd pic below. What seems to be unusual in my specimen - can't find any photos of this anywhere - are the rounded camerae, vs the tightly lined-up straight banding on other specimens. (I'm not sure about the correct terminology...sorry). If I'm not totally off base, is there a chance to narrow down the ID further? Thanks in advance. General form of Actinocerid:
  6. Timer period: Pennsylvanian Location: Missouri Formation: Not exactly sure. Found in an abandoned rock pile containing limestone from the Iola Limestone Still it is a possibility it came from limestone from the Upper Winterset limestone. Hello! I found this nautiloid a long time ago and it was too heavy for me to carry the chunk of limestone that contained it, but before I left I got a few pictures of the specimen! Once I observed the photo a few weeks later I had the biggest regret of my life as it might contain an impression of soft tissue! I don't know If my mind is playing tricks on me but I think it might contain soft tissue. The thought is driving me crazy since I am always doubtful when I find fossils like these and due to my own lack of experience. Can anyone confirm if it does contain soft tissue? Is this a tentacle? or my imagination? Here are photos I edited in photoshop in order to see if I can make the features more visible (Above) Added more saturation and darkened (above) Added saturation and brightened the image I would like to note I have returned to the area but I have had no luck in finding it again and these are the clearest images I could obtain and I apologize for the blurriness Here are the images in their natural file size and some additional images: https://imgur.com/a/80wzODc If possible I would also love to know its species but I find that unlikely since it is bisected and poorly preserved shell wise.
  7. Around 2in or 5.08 cm or 0.051 meters
  8. Sandstone Nautilus Steinkern?

    I found this intriguing rock in Northwest Arkansas, in the Bloyd Formation I believe (carboniferous). It really looks like a steinkern to me, but I've only found limestone steinkerns before, hence my doubts. It's approx. 3" x 2"
  9. Cephalopods?

    I was combing a beach on the southern shore of Lake Ontario for fossils when I found these. The surrounding rocks are Ordovician and contain mainly crinoids and branching corals. I found these two in the water a few feet off of the shore. They look like cephalopods to me, based on the segmentation and shape, and I have seen a nautiloid fossil that was found there a few days ago, but I don't know what kind of cephalopod specifically. I thought the first one might be a crinoid stem except that it tapers off slightly.
  10. 3D Michelinoceras partials from DSR

    From the album Middle Devonian in Central New York

    Michelinoceras telamon Middle Devonian Hamilton Group Moscow Formation Windom Shale Deep Springs Road Lebanon, New York Collected 7/18/20
  11. Spyroceras from DSR

    From the album Middle Devonian in Central New York

    Spyroceras nuntium Middle Devonian Hamilton Group Moscow Formation Windom Shale Deep Springs Road Lebanon, New York Collected 7/18/20
  12. Large goniatite piece from DSR

    From the album Middle Devonian in Central New York

    Agoniatites vanuxemi Middle Devonian Hamilton Group Moscow Formation Windom Shale Deep Springs Road Lebanon, New York Collected 7/18/20

    © Owen Yonkin 2020

  13. Weird Fossil ( Missouri )

    Location is in Missouri The area is dated to the Pennsylvanian Formation: Probably apart of the Raytown limestone member Found this weird fossil on my latest fossil hunting trip, I personally believe it to be some sort of Amminoid since the pattern seems to extend away from the shell and not towards it, but I have only found Nautiloids in the area ( Only 2 spiral shaped specimens that do not look like this and 3 cone shaped.) If anyone can Identify if this is a an Ammonoid or something else I would love to know more! the middle Section with the weird ball like pattern in the middle and what I assume are gas chambers around it
  14. Devonian Identification Dilemma

    Recently I have taken interest in fossil hunting after discovering a plethora of fossils from some farmland in Southern Indiana. It is my understanding the fossils are from the Devonian period. My grandsons (5 and 6 years old) and I have collected several specimens I’ve the last couple of months. I have been searching the Internet for weeks trying to correctly identify our finds and just when I think I have something identified —I find other possibilities. I would like to make displays for the grandkids and label our other collections appropriately. I am in hopes this community would help identify the specimens, and provide advice on how best to label the fossils. I appreciate any assistance that can be provided. Thanks. —Bill Shingleton PS: All the fossils depicted are from Jeffersonville, IN.
  15. Belemnite Cephalopod Art

    Few months back my girlfriend and I stumbled upon a nice deposit of Belemnites in a new area we were exploring, some examples better then others. We decided to make a little art piece to display in the house of the epic afternoon we had! Here is our Belemnite sun. Let us know what you think!
  16. Howdy folks, Having trouble ID’ing this fossil. Im fairly certain it’s a cephalopod but I haven’t had much luck finding an ID. It’s of unknown origin but was found in Texas. It’s a creek fossil basically. I believe this is the side but I’m not certain. No finishing work has been done other than rinse and nylon brush. Opposite side with view of back Bottom?
  17. Domatoceras Perhaps?

    So most of what I find is Metacoceras or Pseudorthoceras, two very common cephalopods locally. I've found a few Solenochilus, but they are different enough that I know what I found right away. This specimen was discovered as a body chamber. I thought Metacoceras, because, why not? Anything of this shape usually is. After some moderate prep, I revealed some more body chamber, but not any suture marks. The venter is oddly shaped as well, with a shallow U shape. It might be crushed, so I didn't pay it too much mind. I also discovered that the body chamber is much larger than any Metacoceras specimen I have found to date. In viewing the paper A NAUTILOID CEPHALOPOD FAUNA FROM THE PENNSYLVANIAN WINTERSET LIMESTONE OF JACKSON COUNTY, MISSOURI (full paper), I found plate 5 which features Domatoceras. They are known to exist here, but I've never found anything definitive. Here is the plate from the article: Here is a Metacoceras (CG-0071) on the left, and the specimen in question (CG-0068) on the right. Here is the venter of CG-0068 showing the two ridges marked with arrows. I feel these are similar to the ridges shown in Figure 2 of Plate 5 And that is that. Any cephalopod people have an opinion? I could prep it more, it's just at the labor intensive micro prepping state right now with solid cement like limestone overlaying it. One more photo of it for some additional context:
  18. How do you distinguish between tentaculites and orthoconic cephalopod fossils?
  19. I found a key to figure out a species of Solenochilus, and I would like to attempt to create a visual guide of the differences in the key. Usually it's a A/B situation. While it's clearly written, I'm still having some trouble figuring out what the difference is. So to start: Suture with ventral saddle. Suture with ventral lobe. I've found this, but it seems like this type of suture has both: Solenochilus has an exposed siphuncle, so the middle (venter) suture is usually interrupted by this. It's also usually straight. I have another 11-14 measurements aside from this first one. Help Update: This is the entire guide for those curious: https://docs.google.com/document/d/1hvqE3_MH0ke0XKCPgL2YeOaddCsIEOU5uOQyZxypCqU/edit?usp=sharing
  20. Help with ID

    Hi! This fossil was found in Middle Tennessee. I have asked a few people what they think it is and their answers have been straight shelled cephalopod and internal structure of a belemnite (which is basically the same, isn’t it)? What do you think? If it is an internal structure of the belemnite, is it the phragmocone? Thank you for your help!
  21. Is This a Nautiloid Cephalopod?

    Hi everyone. The other day I found this interesting impression in a rock. When I first saw it, I noticed that it looked similar to the sutures inside a cephalopod shell, but I thought it may have been wishful thinking and was probably something else. I took it home and asked on Reddit, and another user also said that they believed it was probably a nautiloid shell. So, I'm coming here for final verification. Is this a nautiloid shell? The fossil was found in northwest Michigan, along Lake Michigan. Thanks in advance!
  22. ID Help Please, Something in Limestone.

    Hunting the Mazon Creek last weekend, my wife found this piece in the creek while hunting for Mazon Creek Fossils. What do you think ?? Any help appreciated !! Thanks for checking it out !! Phil
  23. Last year while on a fishing trip in Ithaca, NY I found this as well as some brachiopods in a small outcrop of shale along a stream. I’m pretty sure it’s Devonian in age but I haven’t been able to identify the species.
  24. What kind of cephalopod is this?

    So I found both of these specimens a while back and just assumed it was some sort of cephalopod, but I’m not sure what kind. They were both found in the same area in west Michigan. Any information on these would be really helpful, thank you!
  25. What is This ?

    I found this steinkern in the Maastrichtian, Peedee Form. of SE North Carolina. It is 5 inches long, 2 1/2 inches wide. Any ideas ? Thanks
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