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Re: Dinos galore [snip] and Tendaguru dinos

Tim Williams wrote-

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

"Labrosaurus" stechowi is based on teeth that are similar to Ceratosaurus
nasicornis, but differ in having more extensive premaxillary serrations, and
shorter thicker posterior teeth with medial striations.  Labrosaurus is a
junior synonym of Allosaurus, so perhaps it would be better referred to as
Ceratosaurus? stechowi.
Ceratosaurus roechlingi is based on a large quadrate undiagnostic to the
species level.  It's from a higher level than C? stechowi, though a tooth is
known from that level that has lateral striations as well as medial ones.
Ceratosaurus? ingens has yet to be compared in depth to C. nasicornis, and
is only referred to that genus based on Paul's (1988) preliminary comments.
Other Ceratosaurus material from Tendanguru includes four dorsals, a caudal
and a proximal fibula.
"Allosaurus" tendagurensis is based on a large partial tibia that has a
combination of tetanurine and non-tetanurine characters, so is perhaps a
basal member of the clade.  It resembles Cenomanian "Elaphrosaurus" tibiae
the most, so may be related.  It is diagnostic.  There is also an
inappropriately  referred caudal that is not Allosaurus either.
See http://www.cmnh.org/dinoarch/2002Aug/msg00488.html
Naish (DML 2000) reported on a D-shaped premaxillary tooth from Tendaguru,
perhaps representing a tyrannosauroid.
Finally, there's the supposed Tendaguru Archaeopteryx metacarpal.

Mickey Mortimer