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Re: Bipedalism Revisited

In a message dated 11/10/1996 7:32:13 PM, Jonathan Wagner wrote:

> 2) When sprawling reptiles do locomote rapidly in a quadrapedal
> stance, is there a point at which they stiffen their spines to limit
> lateral flexion?

See Brinkman, D. 1981 - The Hind Limb Step Cycle of Iguana and primitive
reptiles, J. Zool. Lond. 181, 91-103.

> 3) What's a good ref on the musculature of herp (inc. paleoherp)
> limb girdles?

See Russell, A.P. and Bauer, A.M., 1992 - The m. caudifemoralis longus and
its relationship to caudal autotomy and locomotion in lizards (Reptilia:
Sauria), J. Zool. Lond. 227: 127-143.

Snyder, R. C. 1954 - The anatomy and function of the pelvic girdle and
hindlimb in lizard locomotion, The American Journal of Anatomy 95: 1-40.

Snyder, 1962, Adaptions for  Bidpedal Locomotion of Lizards, American
Zoologist, 2: 191-203.

Hamley, T. 1988 - Functions of the tail in bipedal locomotion of lizards,
dinosaurs and pterosaurs, Mem. Qd. Mus. 28(1): 153-158.

BYT: After reading these you'll understand why pterosaurs are fundamentally
different from dinosaurs.

David Peters