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Re: Lost World sauropod
In a message dated 97-05-24 13:54:31 EDT, firstname.lastname@example.org (Mark Sumner)
<< I was under the impression that the articulation of a mamenchisaur's neck
required that it be held nearly parallel to the ground -- a distinction
from others in the group. But the animal in Lost World displays a highly
flexible neck that is held almost vertically at some points.
Is my information wrong? (Always a strong possibility) >>
Back in 1987 or so I noticed that most of the Chinese sauropods have upturned
dorsal 1 and dorsal 2 vertebrae, giving the base of the neck an upward rather
than a forward thrust. These vertebrae are, however, artificially scrunched
into a horizontal position in most of the mounts I've seen, including a
_Mamenchisaurus_ that was displayed at the LA County Museum a few years ago.
I noted this at the time in Archosaurian Articulations #8 and asked Tracy to
restore the Chinese sauropods therein with as much verticality to their necks
as might be suggested by articulating the dorsals correctly. Near-vertical is
the most relaxed position for the neck, as far as we could figure it.