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Mammalodon colliveri

Mammalia - Artiodactyla - Mammalodontidae

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.

Synonymy list
YearName and author
1939Mammalodon colliveri Pritchard pp. 151-159 figs. Fig. 1-3
1982Mammalodon colliveri Fordyce p. 424
1982Mammalodon colliveri Sanders et al. p. H118
2004Mammalodon colliveri Fitzgerald p. 206
2010Mammalodon colliveri Fitzgerald p. 370 figs. Table 1
2011Mammalodon colliveri Geisler et al. p. 6 figs. Table 1
2011Mammalodon colliveri Marx p. 83 figs. Figure 2
2015Mammalodon colliveri Marx and Fordyce figs. Figure 2
2016Mammalodon colliveri Fordyce and Marx p. 114 figs. Fig. 4
2018Mammalodon colliveri Fordyce and Marx p. 5 figs. Fig. 4

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
Cetacea()
Pelagiceti
Neoceti
Mysticeti()
familyMammalodontidae
genusMammalodon
speciescolliveri

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.

Diagnosis
ReferenceDiagnosis
E. M. G. Fitzgerald 2010Emended 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
Composition: hydroxyapatitesubo
Form: roller-shapedo
Ontogeny: modification of partso
Environment: marinesubo
Locomotion: actively mobileo
Life habit: aquaticsubo
Depth habitat: surfaceo
Diet: carnivoresubo
Diet 2: suspension feedersubo
Reproduction: viviparouso
Created: 2005-03-06 14:20:41
Modified: 2005-03-06 16:34:40
Source: subo = suborder, o = order
Reference: Uhen 2004

Age range: Chattian or 28.10000 to 23.03000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Chattian28.1 - 23.03Australia (Victoria) Mammalodon colliveri (46166 type locality: 48647)