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Re: Yandusaurus multidens in SVP2003 abstracts
T. Michael Keesey wrote:
I'm not sure of the exact citation, but apparently there was a paper by
in 1999 naming _Proyandusaurus_ as a new genus for _Yandusaurus multidens_.
also names _Eugongbusaurus_ as a new genus name for _Gongbusaurus
The relevant abstract can be found at:
Fabien Knoll regards _Gongbusaurus shiyii_ as a nomen dubium, but _G.
wucaiwanensis_ as valid, thereby necessitating a new genus to receive the
As stated in the abstract, Knoll also regards _Fabrosaurus australis_ as a
nomen dubium, but upholds the validity of the family name Fabrosauridae.
Unfortunately, it's both or neither; a family cannot be erected upon an
indeterminate genus (or shouldn't be - though Ceratopsidae and
Titanosauridae are probable exceptions to this rule.)
Jaime Headden wrote:
This is based a lot on the absence of a single, strong vertical crest on
the teeth, and large secondary ridges, forming a continuous, crenellated
tooth margin appearing as scalloped clam valves. This feature
occurs in *Muttaburasaurus,* *Tenontosaurus tillettorum* (but not *T.
and *Zalmoxes,* *Qantassaurus* and *Atlascopcosaurus.*
It just so happens that Pincemaille (1999 - another EWVP abstract) found
that _Rhabdodon_ forms a clade with _Muttaburrasaurus_ and _Tenontosaurus_.
*Q.* and *A.* differ only in relative tooth count with similar size,
otherwise they'd be specific
Associated with the lower tooth count is the fact that the dentary of
_Qantassaurus_ is significantly shorter than that of _Atlascopcosaurus_.
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