frenchy2 Posted November 4, 2017 Share Posted November 4, 2017 We found this little fragmented rib during our last fossil hunting trip. We were lucky to find most of the pieces eroding from the Badlands. We usually come across lots of hadrosaur ribs and this one looks totally different, not just in size, but also in shape. The cross-section near the bend in the rib is more square then the usual oval. Late Cretaceous Alberta, Dinosaur Park formation. Thanks Link to comment Share on other sites More sharing options...
KimTexan Posted November 4, 2017 Share Posted November 4, 2017 I have no idea what it is, but this is a bone catalog from the Lance formation of SE Wyoming where they have a lot of edmontasaurus or hadrosaur as well as many other species found there. It may be helpful. https://fossil.swau.edu Link to comment Share on other sites More sharing options...
Peat Burns Posted November 4, 2017 Share Posted November 4, 2017 It's not unlike these (second and 3rd bones from left) in my collection from an Edmontosaurus 2 Link to comment Share on other sites More sharing options...
frenchy2 Posted November 4, 2017 Author Share Posted November 4, 2017 21 minutes ago, Peat Burns said: It's not unlike these (second and 3rd bones from left) in my collection from an Edmontosaurus If you looked at your second rib, would it have a square'ish cross-section near the bend? Link to comment Share on other sites More sharing options...
Peat Burns Posted November 4, 2017 Share Posted November 4, 2017 4 minutes ago, frenchy2 said: If you looked at your second rib, would it have a square'ish cross-section near the bend? I'll try to remember to take a closer look at it on Monday. I don't have the specimen handy at the moment. Link to comment Share on other sites More sharing options...
Troodon Posted November 4, 2017 Share Posted November 4, 2017 It does not look like Edmontosaurus annectens ribs (Hell Creek) I've collected see picture I borrowed from web. The proximal end on the specimen in question is much longer and box shaped. No idea from what dinosaur and the diversity in that fauna is quite large. Unfortunately most publications do not focus on these elements so an ID may be difficult. Nice rib by the way. You may want to contact someone at the Tyrrell and see what they say. Darren Tanke is very good with collectors and manages a Facebook page on ceratopsians. E. regalis ribs from David Evans book Hadrosaurs which is not a match. 1 Link to comment Share on other sites More sharing options...
frenchy2 Posted November 4, 2017 Author Share Posted November 4, 2017 Thanks Troodon, I agree with you that it doesn't look hadrosaurid. Might have to take it to the museum for ID on my next visit. Link to comment Share on other sites More sharing options...
LordTrilobite Posted November 4, 2017 Share Posted November 4, 2017 3 hours ago, Troodon said: E. regalis ribs from David Evans book Hadrosaurs which is not a match. Counting from the back I think it has some similarities with the fifth rib. Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
Troodon Posted November 4, 2017 Share Posted November 4, 2017 The front end of those Edmonto ribs are compressed the specimen in question is more box shaped and much longer Link to comment Share on other sites More sharing options...
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