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Re: Dinos galore [snip] and Tendaguru dinos

Nick Gardner <ratites637@hotmail.com> wrote:

Some absolutely amazing sound stuff. So, does this mean that an adult Alioramus would have looked more like Tarbosaurus?

At the very least, adult _Alioramus_ would probably have had more elaborate cranial ornamentation than _Tarbosaurus_.

On the topic of Tendaguru dinosaurs...

What theropods and ornithopods are known from the Tendaguru?

_Allosaurus_ and _Ceratosaurus_ species have been named based on Tendaguru material. I'm not certain that these are correctly referred; they are based on fragmentary material, and usually treated as _nomina dubia_.

_Dryosaurus lettowvorbecki_ is the only Tendaguru ornithopod that I know of. It's sometimes placed in its own genus, _Dysalotosaurus_.

BTW, there's also _Kentrosaurus_, a Tendaguru stegosaur.

Aren't they mostly species that were referred to N. American genera known at the time?

The Tendaguru species of _Brachiosaurus_ and _Barosaurus_ have been assigned to the new genera _Giraffatitan_ and _Tornieria_, respectively. These assignments have not received universal acceptance, however. To my mind, there is strong evidence that the Tendaguru brachiosaur should be granted its own genus, for which _Giraffatitan_ (originally proposed by Paul as a subgenus) is available. Not only are the skulls of _B. altithorax_ and _B. brancai_ (= _G. brancai_) quite distinct, but I'm not certain of any synapomorphies that can hold these two species together to the exclusion of other brachiosaurid species.

AFAIK, _Dicraeosaurus_ is unique to Tendaguru. The problematic sauropod genera _Janenschia_ and _Tendaguria_ were named much later. Both are unique to the Tendaguru beds.


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