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Just a few thoughts. I just ran across Paul Sereno's preliminary
description of _Afrovenator_ in _Science_, and I noticed that he
classified it as close to _Torvosaurus_ and _Eustreptospondylus_. The
ilium and pubis (broad proximally but quite narrow distally, with a small
expansion at the tip) are indeed rather similar to G.S. Paul's
restoration of _Eustreptospondylus oxoniensis_ in _Predatory Dinosaurs of
the world_, and I am classifying them together in the
Eustreptospondylidae in my new dinosaur classification (as if anyone out
there cared). _Valdoraptor oweni_, from the Early Cretaceous of the Isle
of Wight, also resembles the metatarsus of _Eustreptospondylus_, so
perhaps it belongs with that genus and with _Afrovenator_. Sereno
implies in the 1994 article that _Eustreptospondylus_ possesses the
hypershortened forearm and sickle-shaped thumb claw characteristic of
torvosaurids. Is this correct? Is there even enough known of
_Eustrepto_'s manus to tell?
_Dryptosaurus aquilunguis_ does have the large thumb ungual, and the
referred metatarsal and humerus look much like a megalosaur's, so it might
be a torvosaurid, despite its appearance in the latest Cretaceous.
I noticed that tetanurans (from torvosaurs on up) tend to have
opisthocoelous cervical vertebrae. Can anyone corroborate this? The
only exceptions I've found are _Gasosaurus_ and _Kaijiangosaurus_. The
rest of the bones look tetanuran, but they have platycoelous cervicals.
Perhaps they are more primitive than the rest? Are there any cervicals
referred to _Megalosaurus_?
In general, I agree with Sereno's assessment. Apart from _Gasosaurus_
and _Kaijiangosaurus_ (which might just pertain to the same species),
tetanurans appear to fall into three groups:
?Spinosauridae (?incl. _Baryonyx_)
Piatnitzkysaurinae (_Piatnitzkysaurus_, _Iliosuchus_,
Monolophosaurinae (_Monolophosaurus_, _Cryolophosaurus_)
BTW, what is the current consensus (ha, ha) on
_Chilantaisaurus_--torvosaur or allosaur? Does _C. maortuensis_ belong
to this genus?
I'm also not quite sure where _Megalosaurus_, _Magnosaurus_, and
_Kelmayisaurus_ might belong.
I look forward to comments from whoever reads this.
Pacific Lutheran University