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Re: Tsintaosaurus and Mamenchisaurus
Northern Arizona University
On Tue, 21 Jul 1998, RAY D STANFORD wrote:
> In response to the question of whether someone goofed (on Tsintaosaurus
> spinorhinus and/or Mamanchisaurus: As to Manenchisaurus, nobody goofed.
> The wonderfully articulated skeleton of Mamenchisaurus hochuanensis was
> excavated in 1957 a joint team from the Sichuan Museum and the Chonquing
> Museum, requiring three months to expose the whole marvelous thing.
> Excellent photographs document the completeness of the post-cranial
> skeleton, and they are published in various books, including DINOSAURS FROM
> CHINA by Dong Zhiming (English translation by Angela C. Milner) published
> by the British Museum (Natural History) and China Ocean Press (1988). page
> 37. [If the incredible neck was not an adaptation to 'grazing' IN WATER--
> conceivably even to swimming -- then I'd like to hear a better
Of course if the fossil evidence supports it...I just think that some of
these features must have been more pain than they were worth and not much
fun to live with.
> As to Tsintaosaurus spinorhinus, it was excavated by Professor C.C.
> Young in 1951 and named in 1958. Photos in the book just referenced (pages
> 75 and 76) suggest to me that this 'spike' was probably NOT the result of
> injury, because at its anterior base one clearly sees seemingly WELL-FORMED
> central and latero-central bony support structures (ridges) that seemingly
> would not be the result of injury. Also, there is a distinct bifurcation at
> the top on this 'spike' that looks natural and not trauma-related. The
> whole structure makes me wonder: Could it have supported an 'air bag' or
> even a 'bellows-like' mechanism useful in producing loud, distinct calls?
> Where are you Steven Speilberg? ;-)
> For what it's worth (or not worth), that my 'two bits' on the subject.
> Ray Stanford