Pachyrhinosaurus
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Pachyrhinosaurus is a genus of centrosaurine ceratopsid dinosaur from the Late Cretaceous period of North America. The first examples were discovered by Charles M. Sternberg in Alberta, Canada, in 194
Pachyrhinosaurus Royal Tyrrell 1
Skulls of the three species compared: P. perotorum (with inaccurate epiparietal placement), P. canadensis, and P. lakustai
P. perotorum mounted at the Perot Museum; note the small forwards pointing epiparietals at the top of the frill, which were inaccurately reconstructed following the original description, while these would actually have faced up like in the other species.
TMP 2002.76.1, which may be a specimen of Pachyrhinosaurus, Achelousaurus, or a new taxon, in Royal Tyrrell Museum
Prince Creek Formation
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The Prince Creek Formation is a geological formation in Alaska with strata dating to the Campanian and Maastrichtian stages of the Late Cretaceous and the Danian and Selandian stages of the Paleocene.
Pachyrhinosaurus
…Canyon Formation, about 73–71 Ma ago and the St. Mary River Formation. Fossils of the northernmost species, P. perotorum, have been recovered from the Prince Creek Formation of Alaska, and date to 73 Ma ago. The presence of three known species makes this genus the most speciose among the centrosaurines. Pachyrhinosaurus…
Saurornitholestes digging Burrows wahweap
Alaskan troodont
Pachyrhinosaurus Perotorum Alaska copyright web
Parksosaurus Steveoc 86