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Re: Dinosaur a tecnical term; 3 specifically



William Parker wrote:

Currently there technically is no such thing as a "revueltosaur".
Hopefully, this will be fixed sometime soon with an analysis...

Yes, true. Same for "silesaur".

This is the paper that got the ball rolling...

William G. Parker , Randall B. Irmis, Sterling J. Nesbitt , Jeffrey W. Martz , and Lori S. Browne (2005). The Late Triassic pseudosuchian _Revueltosaurus callenderi_ and its
implications for the diversity of early ornithischian dinosaurs. Proc. R. Soc. B 272: 963-969.


_Revueltosaurus_ is some form of suchian/crurotarsan. Heckert (2005) argued that a second species (_Reveueltosaurus hunti_) might be a bona fide ornithischian, and erected the new genus _Krzyzanowskisaurus_. But Irmis et al. (2006) put it back in _Revueltosaurus_, and referred osteoderms (previously assigned to _Stagonolepis_) to _R. hunti_.

Jamie Stearns wrote:

Teratosaurus, as I recall, was thought to be a large Triassic theropod, but was later found to be a
chimera of Plateosaurus and something else.

As Tom mentioned, _Teratosaurus suevicus_ is based on a maxilla that was re-classified as a rauisuchian by Benton (1986). However, you're right in saying that _Teratosaurus_ was a chimera. Huene later referred other elements to this species, including detached teeth and associated postcranial bones, because the teeth were similar to those of the _Teratosaurus_ maxilla.


Walker (1964) suspected that the postcranial bones and maxilla/teeth did not go together, and suggested that the former came from a _Plateosaurus_-like dinosaur. Nevertheless, the idea of a radiation of Late Triassic-Early Jurassic radiation of primitive carnosaurs called the 'Teratosauridae' persisted for another twenty-or-so years.

Other 'teratosaurids' included _Cladeiodon_, _Zanclodon_, _Zatomus_, _Aetonyx_, _Gryponyx_, _Palaeosaurus_, _Gresslyosaurus_, _Sinosaurus_ and _Orosaurus_. Most 'teratosaurids' were based on detached teeth or jaws of carnivorous archosaurs, or prosauropod bones, or both mixed together. Some are genuine theropods (_Sinosaurus triassicus_, _Zanclodon cambrensis_).

Cheers

Tim

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