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Extinct genus of dinosaurs
found on Acrotholus makes it one of the earliest indisputable known members of the pachycephalosaur family. Like others of its clade, Acrotholus was a bipedal
Acrotholus
Extinct clade of dinosaurs
1945 †Colepiocephale †Stegoceras †Pachycephalosaurinae Sereno, 1997 †Acrotholus †Alaskacephale †Amtocephale †Brontotholus †Foraminacephale †Goyocephale
Pachycephalosauria
Genus of pachycephalosaurid dinosaurs
Pachycephalosaurinae Goyocephale Homalocephale Tylocephale Foraminacephale Amtocephale Acrotholus Prenocephale Alaskacephale Pachycephalosaurini Stygimoloch Pachycephalosaurus
Pachycephalosaurus
Extinct genus of dinosaurs
calathocercos Tylocephale gilmorei Foraminacephale brevis Amtocephale gobiensis Acrotholus audeti Prenocephale prenes Alaskacephale gangloffi Pachycephalosaurus
Homalocephale
Genus of pachycephalosaurid dinosaurs
direction they dispersed. The oldest known members of the group (such as Acrotholus) are "fully domed" and known from the Santonian stage of the Late Cretaceous
Stegoceras
Genus of dinosaurs
Pachycephalosauridae, as the sister taxon to a clade formed by Prenocephale and Acrotholus. The results of their phylogenetic analyses are shown in the cladogram
Platytholus
Genus of pachycephalosaurian dinosaurs
validum Pachycephalosaurinae Tylocephale gilmorei Alaskacephale gangloffi Acrotholus audeti Prenocephale prenes Goyocephale lattimorei Homalocephale calathocercos
Zavacephale
Genus of dinosaur
prominently, a small ridge is present near the back of the parietal, similar to Acrotholus and some specimens of Stegoceras but not present in other pachycephalosaurs
Sinocephale
Extinct genus of dinosaurs
Colepiocephale Gravitholus Hanssuesia Stegoceras Texacephale Pachycephalosaurinae Acrotholus Alaskacephale Amtocephale Brontotholus Foraminacephale Goyocephale Homalocephale
Wannanosaurus
Extinct genus of dinosaurs
calathocercos Tylocephale gilmorei Foraminacephale brevis Amtocephale gobiensis Acrotholus audeti Prenocephale prenes Alaskacephale gangloffi Pachycephalosaurus
Prenocephale
Extinct genus of dinosaurs
skull roof was also smaller relative to Stegoceras, and more similar to Acrotholus. Furthermore, in Foraminacephale, the squamosal and postorbital bones
Foraminacephale
Extinct genus of pachycephalosaur dinosaurs
Goyocephale Homalocephale Tylocephale Prenocephale Foraminacephale Amtocephale Acrotholus Pachycephalosaurini Alaskacephale Pachycephalosaurus 'Stygimoloch spinifer'
Sphaerotholus
Genus of pachycephalosaurid dinosaurs
Goyocephale lattimorei Homalocephale calathocercos Platytholus clemensi Acrotholus audeti Sphaerotholus goodwini Sphaerotholus buchholtzae Sphaerotholus
Brontotholus
Extinct genus of dinosaurs
calathocercos Tylocephale gilmorei Foraminacephale brevis Amtocephale gobiensis Acrotholus audeti Prenocephale prenes Sinocephale bexelli Sphaerotholus goodwini
Alaskacephale
Extinct genus of dinosaurs
Colepiocephale Gravitholus Hanssuesia Stegoceras Texacephale Pachycephalosaurinae Acrotholus Alaskacephale Amtocephale Brontotholus Foraminacephale Goyocephale Homalocephale
Texacephale
Extinct genus of dinosaurs
Colepiocephale Gravitholus Hanssuesia Stegoceras Texacephale Pachycephalosaurinae Acrotholus Alaskacephale Amtocephale Brontotholus Foraminacephale Goyocephale Homalocephale
Amtocephale
Extinct genus of dinosaurs
gilmorei Foraminacephale brevis Amtocephale gobiensis Prenocephale prenes Acrotholus audeti Sphaerotholus goodwini Sphaerotholus buchholtzae Alaskacephale
Goyocephale
Extinct genus of dinosaurs
gilmorei Foraminacephale brevis Amtocephale gobienses Prenocephale prenes Acrotholus audeti Pachycephalosaurus wyomingensis Alaskacephale gangloffi Dracorex
Tylocephale
Achelousaurus Acheroraptor Achillesaurus Achillobator Acristavus Acrocanthosaurus Acrotholus Actiosaurus – subsequently found to be a choristoderan Adamantisaurus
List_of_dinosaur_genera
Extinct genus of dinosaurs
Colepiocephale Gravitholus Hanssuesia Stegoceras Texacephale Pachycephalosaurinae Acrotholus Alaskacephale Amtocephale Brontotholus Foraminacephale Goyocephale Homalocephale
Colepiocephale
elongated neural spines that would have supported a low sail or hump in life Acrotholus - David C. Evans - Ryan K. Schott - Derek W. Larson - Caleb M. Brown -
List of Mesozoic bird-line archosaur genera (A–B)
List_of_Mesozoic_bird-line_archosaur_genera_(A–B)
Fossil flora and fauna of North American site
A partial skull A medium-sized pachycephalosaurine closely related to Acrotholus and Prenocephale Sphaerotholus S. buchholtzae Montana Upper "Skull material
Paleobiota of the Hell Creek Formation
Paleobiota_of_the_Hell_Creek_Formation
Extinct genus of turtles
Formation (Canada), alongside the holotype of the pachycephalosaurid dinosaur Acrotholus audeti. Full reference: C. W. Gilmore. 1916. Contributions to the geology
Neurankylus
elongated neural spines that would have supported a low sail or hump in life Acrotholus 2013 Milk River Formation (Late Cretaceous, Santonian) Canada ( Alberta)
List of North American dinosaurs
List_of_North_American_dinosaurs
Geologic formation in Alberta, Canada
Acrotholus
Milk_River_Formation
Canadian palaeontologist and evolutionary biologist
Tsogtbaatar, Weishampel, Evans, & Watabe, 2019; the pachycephalosaurians Acrotholus audeti Evans, Schott, Larson, Brown, & Ryan, 2013; and Foraminacephale
David C. Evans (paleontologist)
David_C._Evans_(paleontologist)
The progression of pachycephalosaur research over time
Stegoceras novomexicanum. Evans and others described the new genus and species Acrotholus audeti. Dinosaurs portal Paleontology portal History of science portal
Timeline of pachycephalosaur research
Timeline_of_pachycephalosaur_research
Extinct family of mammals
deposits. It included a few dinosaur species like Saurornitholestes and Acrotholus, as well as a variety of other vertebrate such as the crocodilian Gilchristosuchus
Alticonodon
Scientists identify what may be the earliest known pachycephalosaur, Acrotholus audeti. The Alzheimer's drug Gammagard fails to produce results in a large-scale
2013_in_science
temertyorum. Acrotholus Gen. et sp. nov Valid Evans et al. Late Cretaceous (Santonian) Canada A pachycephalosaurid. The type species is Acrotholus audeti.
2013 in archosaur paleontology
2013_in_archosaur_paleontology
Campanian Upper Two Medicine Formation, Alberta Mostly complete skull Acrotholus audeti TMP 2008.045.0001 Royal Tyrell Museum Santonian Milk River Formation
List of marginocephalian type specimens
List_of_marginocephalian_type_specimens
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