[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Emus a Model for Dinosaurs?
Michael Skrepnick wrote:
So if the center of locomotion shifts in neornithes forward from acetabulum
to the knee, as a compensatory shift in the center of mass / gravity (due
primarily to a reduction in the caudal series ), can we assume Caudipteryx
grade animals also may have moved via a knee driven mechanism?
No, we cannot assume this.
Christiansen, P. and Bonde, N. (2002). Limb proportions and avian
terrestrial locomotion. J. Ornithol. 143: 356-371.
Among other things, Christiansen and Bonde argue that _Caudipteryx_ did
*not* have avian-style stride generation, contradicting the assertion of
Jones et al. (2002) that _Caudipteryx_ did (and was therefore a secondarily
Jones, T.D., Farlow, J.O., Ruben, J.A., Henderson, D.M. and Hillenius, W.J.
(2000). Cursoriality in bipedal archosaurs. Nature 406: 716-718.
Add a Yahoo! contact to Windows Live Messenger for a chance to win a free