[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
RE: More on the Massospondylus embryos
> From: firstname.lastname@example.org [mailto:email@example.com]On Behalf Of
> Luis Rey
> ? ?
> I haven't seen any modern restoration of a biped prosauropod. The fact
> that they could rear and stand on their two back legs doesn't mean that
> they were habitual bipeds when walking. The long body (specially
> Massospondylus) and center of gravity never seemed to me apt to do that
> and all modern skeletal restorations show prosauropods as walking on
> all fours.
Galton & Upchurch (in their Prosauropoda chapter of Dinosauria II) regard
Saturnalia and Thecodontosaurus as fully bipedal,
Riojasaurus and the other melanorosaurids (Melanorosaurus, Camelotia,
Lessemsaurus), and the remaining prosauropods as facultative
bipeds. They quote Christian and Preuschoft in suggesting that Plateosaurus was
a habitual quadruped which may have used a bipedal
gait for its fastest locomotion and while standing.
Thomas R. Holtz, Jr.
Department of Geology Director, Earth, Life & Time Program
University of Maryland College Park Scholars
Building 237, Room 1117
College Park, MD 20742
Phone: 301-405-4084 Email: firstname.lastname@example.org
Fax (Geol): 301-314-9661 Fax (CPS-ELT): 301-405-0796