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Re: II CLPV talk summaries: Day 2
like a sauropod, based on the shape of the astragalus? In that case it
would have needed a heel pad. <<<
Wasn't it recently said that *Plateosaurus* was "semiplantigrade"
It was, but it was wrong. The conclusion of semi-plantigady was based
on an interpretation of the needed locomotory arc the ankle and foot
would have to swing through, and (IMHO) the kinematics were based on
very bad assumptions. Also, sauropods are no more semi-plantigrade
than elephants are (Matt Bonnan may have a different opinion here?).
Both have digitigrade hindfeet, backed by a large pad that distributes
the weight of the animal during locomotion. Plantigrade animals do not
usually have large heel pads like we see in the pes impressions of
Wyoming Dinosaur Center
110 Carter Ranch Rd.
Thermopolis, WY 82443