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Journal of Vertebrate Paleontology Volume 18, 1998 - Issue 2
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Original Articles

Polar dinosaur bone histology

Anusuya Chinsamy South African Museum and the University of Cape Town, P. O. Box 61, Cape Town 8000, Private Bag, Rondebosch 7700, South Africa
,
T. Rich Museum of Victoria, Vertebrate Palaeontology, Melbourne, Victoria, 3000, Australia
&
P. Vickers-Rich Earth Sciences Department, Monash University, Clayton, Victoria, 3168, Australia
Pages 385-390 | Received 24 Apr 1996, Accepted 15 May 1997, Published online: 24 Aug 2010
 
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ABSTRACT

We report on the bone microstructure of a hypsilophodont and an ornithomimosaur from the Early Cretaceous, Otway Group of Dinosaur Cove in south-eastern Australia, which at the time lay well within the Antarctic Circle. Although subjected to the same environmental conditions, the dinosaurs exhibit different bone histology. The hypsilophodontid shows a continuous rate of bone deposition, while the ornithomimosaur has a cyclical pattern of bone formation. We interpret these varying patterns of bone microstructure as a reflection of different growth strategies of these dinosaurs.

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