Acrotholus

Acrotholus
Temporal range: Late Cretaceous, 84–83.5 Ma
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Dinosauria
Order: Ornithischia
Family: Pachycephalosauridae
Genus: Acrotholus
Evans et al., 2013
Type species
Acrotholus audeti
Evans et al., 2013

Acrotholus is an extinct genus of fully domed pachycephalosaurid dinosaur known from the Late Cretaceous Deadhorse Coulee Member of the Milk River Formation (latest Santonian stage) of southern Alberta, Canada. It contains a single species, Acrotholus audeti.[1]

Phylogeny

Below is a cladogram modified from Evans et al., 2013.[1]

 Pachycephalosauria 

Wannanosaurus yansiensis


 Pachycephalosauridae 


Colepiocephale lambei



Hanssuesia sternbergi



Stegoceras novomexicanum



Stegoceras validum





Goyocephale lattimorei




Homalocephale calathocercos




Tylocephale gilmorei




Foraminacephale brevis




Amtocephale gobiensis





Acrotholus audeti



Prenocephale prenes






Alaskacephale gangloffi



Pachycephalosaurus wyomingensis





Sphaerotholus buchholtzae



Sphaerotholus goodwini












See also

References

  1. 1 2 Evans, D. C.; Schott, R. K.; Larson, D. W.; Brown, C. M.; Ryan, M. J. (2013). "The oldest North American pachycephalosaurid and the hidden diversity of small-bodied ornithischian dinosaurs". Nature Communications. 4: 1828. Bibcode:2013NatCo...4E1828E. doi:10.1038/ncomms2749. PMID 23652016.
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