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Nanodobenus

Mammalia - Carnivora - Odobenidae

Taxonomy
Nanodobenus was named by Velez and Salinas-Márquez (2018). Its type is Nanodobenus arandai.

It was assigned to Odobenidae by Velez and Salinas-Márquez (2018).

Species
N. arandai (type species)

Synonymy list
YearName and author
2018Nanodobenus Velez and Salinas-Márquez p. 2

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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
RankNameAuthor
classMammalia
—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()
genusNanodobenus

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.

G. †Nanodobenus Velez and Salinas-Márquez 2018
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†Nanodobenus arandai Velez and Salinas-Márquez 2018
Diagnosis
ReferenceDiagnosis
J. Velez and F. M. Salinas-Márquez 2018Identified as an odobenid based on the presence of post-canine teeth that are bulbous, longer than high and with smooth enamel. Smallest known odobenid, with a body length estimated at 1.65 m (based on [7]; table 3); further characterized by the following unique combination of mandibular characters: mandibular symphysis with a subtriangular outline (narrower posteroventrally), symphysis short (shared with Proneotherium repenningi, Neotherium mirum, Kamtschatarctos sinelnikovae and Pontolis magnus), genial tuberosity extending well below ventral margin of ramus (shared with Pelagiarctos spp., Archaeodobenus akamatsui, Imagotaria downsi, P. magnus, Dusignathus spp. and Ontocetus emmonsi), and located posterior to p2 (shared with P. magnus, Dusignathus spp., Gomphotaria pugnax and O. emmonsi). Differing further by the following dental characters: lower canine with bilobed root (shared with N. mirum, Pelagiarctos spp. and I. downsi); well-developed enamel on post-canine teeth (as in most early odobenids, and differing from P. magnus, Dusignathus spp., G. pugnax and odobenines); post-canine teeth with small, but distinct paraconid cusp (shared with N. mirum, K. sinelnikovae, I. downsi, Pelagiarctos spp. and A. akamatsui); absence of a talonid basin on the post-canine teeth (shared with Pr. repenningi, A. akamatsui and odobenines), p2 root bilobed, double rooted p3–4 and retention of m2 (differing from the single roots and lack of m2 of Dusignathus spp., G. pugnax and more derived odobenids).
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: Carreño and Cronin 1993, Kohno et al. 1995, Hendy et al. 2009

Age range: base of the Langhian to the top of the Tortonian or 15.98000 to 7.24600 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Langhian - Tortonian15.98 - 7.246Mexico (Baja California Sur) N. arandai (57778)