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A Primitive Dome-Headed Dinosaur (Ornithischia: Pachycephalosauridae) from the Lower Cretaceous of England and the Function of the Dome of Pachycephalosaurids
Peter M. Galton
Journal of Paleontology
Vol. 45, No. 1 (Jan., 1971), pp. 40-47
Published by: SEPM Society for Sedimentary Geology
Stable URL: http://www.jstor.org/stable/1302750
Page Count: 8
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A thickened skull cap from the Wealden (Lower Cretaceous) of the Isle of Wight is from a very primitive pachycephalosaurid dinosaur. The skull cap resembles that of hypsilophodontids more closely than that of Stegoceras in which one specimen has a low dome and a large supratemporal fenestra. The thick skull cap of pachycephalosaurids was probably used as a battering ram for intraspecific competition.
Journal of Paleontology © 1971 SEPM Society for Sedimentary Geology