svcgoat Posted January 28 Share Posted January 28 Sellers says this is a Trex vert from the Hell Creek Formation. Any way to tell the difference between a Trex and a Herbivore? @jpc @hadrosauridae Link to comment Share on other sites More sharing options...
FB003 Posted January 28 Share Posted January 28 No picture as of the timestamp on this post. *Frank* Link to comment Share on other sites More sharing options...
svcgoat Posted January 28 Author Share Posted January 28 Woops Link to comment Share on other sites More sharing options...
Browning Posted January 28 Share Posted January 28 Size can help determine the id. T. Rex bone also has a honeycomb shape to the inner trabecular bone. Vertebral bodies (centrum) are narrow in the middle than the ends. 1 Link to comment Share on other sites More sharing options...
Browning Posted January 28 Share Posted January 28 https://www.researchgate.net/publication/249022959_Osteology_of_Tyrannosaurus_rex_Insights_from_a_Nearly_Complete_Skeleton_and_High-Resolution_Computed_Tomographic_Analysis_of_the_Skull If you really want to dive deep. Link to comment Share on other sites More sharing options...
jpc Posted January 28 Share Posted January 28 (edited) the end on view of a tyrannosaur is very round, which this one is not, But the is that because the bone is incomplete? If it were, we would be looking into it in the pix of the broken surface. This is where a T would show honeycombing. I do not see it. (the photo where the caliper says 5.006). Matter of fact, there is so much glue or something on this part, that it is hard to see what is going on. As browning says above : "Vertebral bodies (centrum) are narrow in the middle than the ends." But I do not think this one is narrow enough. Looking at Brochu's mongraph (the link in browning's second post) it is too long to be a cervical. Most dorsals are more deeply concave than this one although I would ask the seller for a side view to be sure. It could be aa tail vert. As for diving deep... this is exactly what a potential buyer should be doing before spending money on an expensive fossil. (I just had a guy contact me asking to authenticate his Psittacosaurus skeleton he bought... my initial reaction... "Dude, authenticate this before you spend too much money on it", but i was polite). I would ask the seller why he is calling it a rex? Edited January 28 by jpc Link to comment Share on other sites More sharing options...
svcgoat Posted January 28 Author Share Posted January 28 Thank you I asked and they said that's what they were told Link to comment Share on other sites More sharing options...
Browning Posted January 28 Share Posted January 28 Online sales, especially ebay, are so sketchy. You have to know your stuff. I bet I can go there now and find a $5k "dinosaur bone" or "fossilized brain" that is 100% river cobble. 1 Link to comment Share on other sites More sharing options...
svcgoat Posted January 28 Author Share Posted January 28 Yeah I know that's why I like to check here first Link to comment Share on other sites More sharing options...
jpc Posted January 29 Share Posted January 29 if that is all they can say... I would avoid it. 1 Link to comment Share on other sites More sharing options...
svcgoat Posted January 29 Author Share Posted January 29 Thank you! That's the plan Link to comment Share on other sites More sharing options...
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