Sphaerotholus
Extinct genus of pachycephalosaur dinosaurs / From Wikipedia, the free encyclopedia
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Sphaerotholus is a genus of pachycephalosaurid dinosaur from the Upper Cretaceous of the western United States and Canada. To date, five species have been described: the type species, S. goodwini, from the Den-na-zin Member of the Kirtland Formation (Late Campanian) of San Juan County, New Mexico, USA; S. buchholtzae, from the Hell Creek Formation (Late Maastrichtian) of western Carter County, Montana, USA and the Frenchman Formation of Saskatchewan, Canada; S. edmontonensis, from the Horseshoe Canyon Formation of Alberta, Canada; S. lyonsi, from the Dinosaur Park Formation (Campanian) of Alberta, Canada; and S. triregnum from the Hell Creek Formation of Garfield County, Montana, USA.
Sphaerotholus | |
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S. buchholtzae specimen AMNH 0044 | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | †Ornithischia |
Clade: | †Pachycephalosauria |
Family: | †Pachycephalosauridae |
Subfamily: | †Pachycephalosaurinae |
Genus: | †Sphaerotholus Williamson & Carr, 2002 |
Type species | |
†Sphaerotholus goodwini Williamson & Carr, 2002 | |
Other species | |
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