Peat Burns Posted March 17, 2017 Share Posted March 17, 2017 Any help on the identity and position of this small (scale bar = 1 mm) vertebra from the Hell Creek Formation (Late Cretaceous) of S. Dakota, would be greatly appreciated. It looks like much of the neural arch and processes are gone. The centrum is a bit more dorso-ventrally flattened as compared to the turtle vertebra I posted the other day, and the ventral side (?) of the centrum has sinuses unlike the turtle vert (perhaps due to wear / breakage?). Link to comment Share on other sites More sharing options...
Troodon Posted March 17, 2017 Share Posted March 17, 2017 Gar fish vertebra 4 Link to comment Share on other sites More sharing options...
Peat Burns Posted March 17, 2017 Author Share Posted March 17, 2017 12 minutes ago, Troodon said: Gar fish vertebra Wow. Ok. I didn't even think of fish. I was thinking, incorrectly obviously, that all fish were amphicoelous). Thanks for the help. Link to comment Share on other sites More sharing options...
Troodon Posted March 17, 2017 Share Posted March 17, 2017 Checkout this guide to Hell Creek....to big to post here https://www.google.com/url?sa=t&source=web&rct=j&url=http://digfieldschool.org/wp-content/uploads/2013/08/Fossil-ID-Guide_06_28_12.pdf&ved=0ahUKEwj80LnMrd7SAhXFjlQKHW9dAeAQFggaMAA&usg=AFQjCNFe8nmkK2TYkI8q1eITSxXzGJclgw&sig2=K_PMnILVr5aTF6hEr8jZGQ 3 Link to comment Share on other sites More sharing options...
jpc Posted March 18, 2017 Share Posted March 18, 2017 Dang... troodon beat me to it. Gar, as for position, they are all the same to the non-expert. 1 Link to comment Share on other sites More sharing options...
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