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Archaeodobenus akamatsui

Mammalia - Carnivora - Odobenidae

Taxonomy
Archaeodobenus akamatsui was named by Tanaka and Kohno (2015). Its type specimen is UHR 33282, a partial skeleton, and it is a 3D body fossil. Its type locality is Rutaka Bridge, which is in a Tortonian marine sandstone in Japan. It is the type species of Archaeodobenus.

Synonymy list
YearName and author
2015Archaeodobenus akamatsui Tanaka and Kohno
2018Archaeodobenus akamatsui Berta et al. p. 217 figs. Fig. 6
2018Archaeodobenus akamatsui Magallanes et al. p. 30 figs. Figure 14

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
RankNameAuthor
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Ferae()
—CarnivoramorphaWyss and Flynn 1993
—CarnivoraformesFlynn et al.
orderCarnivora
suborderCaniformiaKretzoi 1943
infraorderCanoidea(Simpson 1931)
superfamilyArctoideaFlower 1869
—PanpinnipediaWolsan et al. 2020
—Pinnipedimorpha
—Pinnipedia()
familyOdobenidae()
genusArchaeodobenus
speciesakamatsui

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.

†Archaeodobenus akamatsui Tanaka and Kohno 2015
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Diagnosis
ReferenceDiagnosis
Y. Tanaka and N. Kohno 2015Archaeodobenus akamatsui is an archaic odobenid with a slender and small cranium and non-tusked, moderate-sized upper canine. Distinguished from other archaic odobenids (Prototaria primigena, P. planicephala, Proneotherium repenningi, Neotherium mirum, Kamtschatarctos sinelnikovae and Pseudotaria muramotoi) by the following derived characters: pentagonal basioccipital (character 30), blade-like spinous process of axis (character 91). Distinguished from later diverging odobenids (Imagotaria downsi, Pontolis magnus, dusignathines and odobenines) by retention of the following primitive characters: deep mandibular fossa (character 26); small mastoid process (character 33); two distinct roots on premolars (expect P1) (character 74 and 76).
Measurements
No measurements are available
Composition: hydroxyapatiteuc
Ontogeny: modification of partsuc
Environment: marinef
Locomotion: actively mobilec
Life habit: amphibiousf
Diet: carnivoref
Reproduction: viviparousf
Created: 2011-05-21 01:16:23
Modified: 2011-05-20 10:16:23
Source: f = family, c = class, uc = unranked clade
References: Kohno et al. 1995, Carreño and Cronin 1993, Hendy et al. 2009

Age range: Tortonian or 11.62000 to 7.24600 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Tortonian11.62 - 7.246Japan (Hokkaido) Archaeodobenus akamatsui (type locality: 172573)