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Acrotholus audeti
Taxonomy
Acrotholus audeti was named by Evans et al. (2013). Its type specimen is TMP 2008.045.0001, a partial skull (nearly complete frontoparietal dome), and it is a 3D body fossil. Its type locality is Black Coulee, which is in a Santonian terrestrial horizon in the Milk River Formation of Canada.
Synonymy list
| Year | Name and author |
|---|---|
| 2013 | Acrotholus audeti Evans et al. p. 2 figs. 1-3 |
| 2017 | Acrotholus audeti Schott and Evans p. 900 |
| 2018 | Acrotholus audeti Evans et al. p. 127 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Acrotholus audeti Evans et al. 2013
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. C. Evans et al. 2013 | Medium-sized pachycephalosaurid with the following autapomorphies: ovoid dome in dorsal view in which the width of the frontoparietal dome is less than two thirds its total length, distinct midline ridge on the dorsal surface of the posteromedian process of the parietal. Differs from Stegoceras validum and Colepiocephale in the absence of grooves between the frontonasal boss and the supraorbital lobe, the full incorporation of supraorbitals into the dome, and in the symmetry of the dome in lateral view. Differs from Pachycephalosaurus and Sphaerotholus in that the postorbital extends higher on the dome than the posterior supraorbital, and their sutural surfaces are strongly arched dorsally. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Marsh 1875 | |||||
Age range: Late/Upper Santonian or 85.80000 to 83.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Santonian | Canada (Alberta) | Acrotholus audeti (type locality: 125521) |