ranitomeya 6 Posted May 1, 2017 Anyone have any idea what this might be? Was found last week while splitting Widder shale looking for Greenops. I usually don't take much home other than trilobites but I have never seen anything like this before. From Hamilton group, Widder formation, was found alongside Greenops bits. Any ideas would be appreciated. Thanks! Share this post Link to post Share on other sites
Micah 61 Posted May 1, 2017 I'm no expert, but maybe some kind of cephalopod on the bottom right and the bumps appear to be braciopods or bivalves with crystal that filled in a crack between them? My first impression was that it was simply some kind of cavity that filled with quartz or some other crystal often fossils form those cavities though. My thoughts, but wait for an expert. Share this post Link to post Share on other sites
Fossildude19 14,848 Posted May 2, 2017 Hard to say, but I would look into phyllocarid mandibles, perhaps. Cropped and contrasted. Regards, Share this post Link to post Share on other sites
ranitomeya 6 Posted May 2, 2017 Thanks! It does look to be a phyllocarid mandible after comparing it to other pictures. I appreciate your insight Fossildude19. Share this post Link to post Share on other sites
FossilDAWG 5,855 Posted May 2, 2017 I have collected a phyllocarid, probably a Rhinocaris, from the Widder. Echinocaris is also known. Copeland and Bolton (1979) have an excellent publication on Ontario eurypterids and phyllocarids, including illustrations of some from the Widder and Arkona Shale (link here). Don Share this post Link to post Share on other sites
Ludwigia 6,963 Posted May 2, 2017 Interesting. Any chance of exposing a bit more of it? Share this post Link to post Share on other sites
trilobite nut 3 Posted October 22, 2017 Definitely a phyllocarid mandible. I have a few from that area...good find! Share this post Link to post Share on other sites
abyssunder 5,574 Posted October 22, 2017 My fist impression was a jaw. Now, seeing the experts opinion, I'm sure I was not wrong. Share this post Link to post Share on other sites