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Mammalodon hakataramea

Osteichthyes - Cetacea - Mammalodontidae

Taxonomy
Mammalodon hakataramea was named by Fordyce and Marx (2016). Its type specimen is OU 22026, a partial skull (dorsal part of braincase, comprising much of the supraoccipital and parts of the parietals and squamosals, preserved with the original dorsal surface down, and ), and it is a 3D body fossil. Its type locality is Haughs Quarry [Kokoamu Greensand], which is in a Duntroonian marine sandstone/limestone in the Kokoamu Greensand Formation of New Zealand.

Synonymy list
YearName and author
2016Mammalodon hakataramea Fordyce and Marx p. 109 figs. Figs. 2, 3
2017Mammalodon hakataramea Tsai and Kohno
2018Mammalodon hakataramea Fordyce and Marx p. 5 figs. Fig. 4
2024Mammalodon hakataramea Robinson et al. p. 576
2025Mammalodon hakataramea Duncan et al. p. 31

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
RankNameAuthor
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Whippomorpha
orderCetacea
—Pelagiceti
—Neoceti
suborderMysticeti
familyMammalodontidae
genusMammalodon
specieshakataramea

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 hakataramea Fordyce and Marx 2016
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Diagnosis
ReferenceDiagnosis
R. E. Fordyce and F. G. Marx 2016Differs from M. colliveri in having smaller teeth, an anteroposteriorly longer supraoccipital and a parabolic nuchal crest that lacks an abrupt anterolateral curve in dorsal view, as well as in having a tympanic bulla with a more distinct interprominential notch, a straight medial margin, an anterolaterally more in ated outer lip, and a deeper involucrum bearing less developed oblique sulci (without adjacent nodules).
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: Duntroonian or 27.30000 to 25.20000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Duntroonian27.3 - 25.2New Zealand Mammalodon hakataramea (type locality: 152358)