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Mammalodon colliveri
Taxonomy
Mammalodon colliveri was named by Pritchard (1939). Its type specimen is MUGD 1874, a skull, and it is a 3D body fossil. Its type locality is Ad24. Bird Rock, which is in a Chattian coastal horizon in the Jan Juc Formation of Australia. It is the type species of Mammalodon.
Synonymy list
| Year | Name and author |
|---|---|
| 1939 | Mammalodon colliveri Pritchard pp. 151-159 figs. Fig. 1-3 |
| 1982 | Mammalodon colliveri Fordyce p. 424 |
| 1982 | Mammalodon colliveri Sanders et al. p. H118 |
| 1991 | Mammalodon colliveri Fordyce p. 1180 |
| 2004 | Mammalodon colliveri Fitzgerald p. 206 |
| 2010 | Mammalodon colliveri Fitzgerald p. 370 figs. Table 1 |
| 2011 | Mammalodon colliveri Geisler et al. p. 6 figs. Table 1 |
| 2011 | Mammalodon colliveri Marx p. 83 figs. Figure 2 |
| 2015 | Mammalodon colliveri Marx and Fordyce figs. Figure 2 |
| 2016 | Mammalodon colliveri Fordyce and Marx p. 114 figs. Fig. 4 |
| 2017 | Mammalodon colliveri Tsai and Kohno |
| 2018 | Mammalodon colliveri Fordyce and Marx p. 5 figs. Fig. 4 |
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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.
†Mammalodon colliveri Pritchard 1939
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. M. G. Fitzgerald 2010 | Emended diagnosis of Mammalodon colliveri: Mammalodon colliveri is a mammalodontid mysticete distinguished from J. hunderi by the following autapomorphic characters: rostrum has a bluntly rounded apex; viewed dorsally, the rostrum has a gently convex lateral profile; alveoli for the upper incisors are coa- lesced; body of the premaxilla is gracile and foreshortened; premaxilla is dorsoventrally flattened; nasal expands in width towards its anterior end; five dorsal infraorbital foramina in facial fossa; ascending process of the maxilla is transversely narrow and linguiform; posterior edge of the ascending process of maxilla lies in transverse line with the posterior edge of the nasal; orbit directed further anteriorly and anterodorsally; anteriormost point on the posterior edge of the supraorbital process of the frontal is laterally positioned; in cross-section, the parietals have a gently convex dorsal profile, with no salient sagittal crest along the midline of the braincase; nuchal crest projects anterodorsally and anterolaterally; alisphe- noid forms most of the roof of the pterygoid sinus fossa, with the superior lamina of the pterygoid limited to the anteromedial corner of the sinus fossa; involucrum of the tympanic bulla bears a transverse groove on its dorsal surface, which divides it into a wider posterior part and a narrower anterior one; in dorsal or ventral view the mandible is straight; body of the mandible is relatively gracile; mental foramina relatively large; and three upper and four lower molars present (i.e. polydont lower dentition). |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||