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Brachiosaurus and co.
Thomas R. Holtz, Jr wrote:
Or, to use more recent terminology, brachiosaurids and titanosaurids > are
both members of Titanosauriformes. They share a more recent common
ancestor with each other than either do with (for example) diplodocoids.
Apart from _Brachiosaurus_, other non-titanosaurid titanosauriforms include
_Pleurocoelus_, Texan "Pleurocoelus", _Chubutisaurus_, _Austrosaurus_,
_Sonorasaurus_, and possibly _Bellusaurus_ (which Dong Zhi-Ming thinks is
closely related to _Pleurocoelus_). John McIntosh (1990) also included
_Lapparentosaurus_ and _Volkheimeria_ in the Brachiosauridae, but this pair
appear to be basal neosauropods or eusauropods (Salgado et al., 1997).
While on the topic of brachiosaurs, I have a question. There is a rumor
that a _Brachiosaurus_ skull may actually have been found in North America,
and it looks very different to the skull of the Tendaguru _Brachiosaurus_
(B. brancai_). In fact (says the rumor) it's usually been assumed that this
skull belongs to _Camarasaurus_, which it resembles very closely. Can
anyone confirm? (And apologies if I'm blabbing something top-secret :-) )
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