Sizev_McJol Posted March 3, 2018 Share Posted March 3, 2018 I'm posting this per the suggestion of @Fossildude19 initially I pegged this as a trilobite, until I saw @electricshaman's nautiloid get identified earlier today. Now I'm not sure. Thoughts? Link to comment Share on other sites More sharing options...
piranha Posted March 3, 2018 Share Posted March 3, 2018 Orthoconic cephalopod. The thoracic pleurae and axis of a trilobite would be tapered in the same direction. 1 Link to comment Share on other sites More sharing options...
FossilDAWG Posted March 3, 2018 Share Posted March 3, 2018 It's a nautilod (or mostly the impression of one), probably some type of actinocerid. One possibility could be Gonioceras, like the one in the other thread where you also posted this photo. However it's hard to be sure because in your specimen the septa are not preserved all the way to the outside edge, so it's not clear if they were recurved (bent backwards) or not. Don Link to comment Share on other sites More sharing options...
izak_ Posted March 3, 2018 Share Posted March 3, 2018 I agree with nautiloid. Link to comment Share on other sites More sharing options...
Sizev_McJol Posted March 3, 2018 Author Share Posted March 3, 2018 Thanks guys for the clarification! Link to comment Share on other sites More sharing options...
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