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Found 5 results

  1. First one I want to confirm ID, it's still a work in progress, Calycoceras Tarrantense? The other one I just wanted to share, I haven't seen such unique preservation and view of the siphuncle and think it's facinating.
  2. Bringing Fossils to Life

    A tiny orthoconic cephalopod from New York

    Hi everyone! I just got back from a trip to Penn Dixie Fossil Park near Buffalo, New York, and found some pyritized cephalopod fossils. Penn Dixie has rocks form the Givetian of the Devonian from the Hamilton Group. A young ammonoid is easily identified as Tornoceras uniangulare, but the other orthoconic fossils are harder to ID. I am pretty sure the small but more complete one is a Bactrites, because the siphuncle appears to be almost ventral, the distance between the septa, and the slightly slanted suture (after looking at Ludwigia's). The preserved shell is very smooth and couldn't be from a Spyroceras that are also found at Penn Dixie. Similar fossils to mine are pictured on their website, unidentified. If any more pictures are needed, I will try to take them. I wanted some expert advice before concluding it is a Bactrites. Can anyone help?
  3. Scylla

    Oldest Cephalopod Ever

    Tiny creature (not yet named) had a siphuncle 522 million years ago. Ancestor of all those other cephalopods? https://www.livescience.com/ancient-octopus-relative-fossil.html
  4. Hy guys, So I got this nautiloid in a wholesale and when I got home I realized this kind of small "hole" in the inner part of the shell. My doubt is if this is reminiscent of the siphuncle or it was made by someone. What do you think?
  5. Reklaw

    Platteville Cephalopod

    So this is a fossil from Beloit Wisconsin found in the Platteville formation. I am pretty sure it is a cephalopod but I have no idea what genus or species. The siphuncle is hollow except for two septa that run right through it. 3" post-it note for scale.
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