Parrish, J. Michael, 1953-
M.S. (Master of Science)
Department of Biological Sciences
Characteristics of ontogenetic stages (juvenile, subadult, and adult) were defined according to the relative degree of suture closure in individuals from the Coelophvsis bauri population of Ghost Ranch quarry. The ontogenetic series is incomplete, showing an increase of a factor of 2.3 in the femora length, and 3.6 in skull length. Principal components analysis indicated that there is no separation of individuals into sexual dimorphic groups, concurring with subjective physical examination of the skeletons. This result runs contrary to evidence of sexual dimorphism found in other ceratosaurs. The ontogenetic series made it possible to study the change of limb proportion and possible locomotor function. Coelophvsis was a bipedal strider. Proportions of hind limb elements indicate that Coelophvsis was a relatively rapid and efficient runner.
Genin, Doreen S., "Hind limb proportions and ontogenetic changes in the theropod dinosaur, coelophysis bauri" (1992). Graduate Research Theses & Dissertations. 3383.
viii, 107 pages
Northern Illinois University
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