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Re: Mongolian Strata
From: "Nicholas J. Pharris" <pharrinj@PLU.edu>
> 1) What is the currently accepted definition of the Euhelopodidae, and
> what does it contain?
I consider it to include the following:
Euhelopus, Omeisaurus, Tienshanosaurus, Mamenchisaurus, and
The group is characterized by unusually long necks, consisting of
of a large number of vertebrae, combined with a persistantly
"primitive" skull structure. The tail has chevrons similar in
structure to those of diplodocids.
> Where does it lie in the dinosaur family tree.
Probably close the the origin of the titanosaurid clade.
> After reading Macintosh's article in _The Dinosauria_, I was pretty well
> convinced that the Euhelopodidae were an unnatural assemblage of Chinese
> sauropods, all of which had developed parallel adaptations for feeding at
> the tops of trees ...
The recent discovery of a Mamenchisaurus skull has changed the
situation. It had a skull similar to that of other euhelopodids.
The peace of God be with you.