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Showing results for tags 'belly river group'.
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Hi everyone! I am open for trading my 2'60 Tyrannosauridae indet. tooth from the Dinosaur park Fm, Belly River Group, Alberta Canada. For myself I am looking for really high quality theropod teeth. Like them from morocco with (partial) root as well. Or Tyrannosauridae from Asia always has interested me. Tarbosaurus for example.
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- belly river group
- daspletosaur
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Hi I was wondering is the horseshoe canyon formation part of the belly river group?
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- alberta
- belly river group
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My first day out. Not sure what it all is but looks like tyrannosaur teeth, claws? Horn? Big toe bone and micro toe bone? Croc tooth, small vertibra? I would appreciate if anyone can help out on the ID. Next time I'm going to take a digital tour and post in situ.
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- belly river group
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Has anybody figured out the exact systematic placement of Stephanosaurus marginatus? As far as I can recall, the holotype of S. marginatus (CMN 419) consists of bones of the forelimb and the foot as well as fragments of neck vertebrae, teeth, and ribs (disassociated bones cataloged under CMN 419 [including a theropod ischium] were provisionally referred to T. marginatus by Lambe 1902, but were later referred to Lambeosaurus by Gilmore 1924). The two editions of the Dinosauria list Stephanosaurus and its type species as a nomen dubium (probably based on the assessment of Stephanosaurus as gen. et. sp. indet. in Brett-Surman's 1989 thesis), but without comment. As pointed out by Gilmore (1924), Stephanosaurus differs from Gryposaurus notabilis only in that the humerus and radius are almost equally proportional to each other in length (ratio of humerus length to radius length in Stephanosaurus 1:0.953 versus 1:0.881 in Gryposaurus notabilis) and the radius and ulna are larger than those of Gryposaurus. Since mid-late Campanian of Montana and Canada is starting to become crowded with saurolophines belonging to different tribes (Brachylophosaurini, Kritosaurini, Saurolophini) and no edmontosaurins have been found in the Dinosaur Park Formation yet, I'd be curious to see if Stephanosaurus could be its own thing or not.
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- belly river group
- hadrosaurid
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