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Pontolis kohnoi

Mammalia - Carnivora - Odobenidae

Taxonomy
Pontolis kohnoi was named by Biewer et al. (2020). Its type specimen is LACM 118967, a partial skeleton (skull with associated mandibles and postcranial elements, including atlas, axis, an indeterminate cervical vertebra, several thoracic, lumbar, sacral, and cauda), and it is a 3D body fossil. Its type locality is Lambert Reservoir, which is in a Messinian marine horizon in the Capistrano Formation of California.

Synonymy list
YearName and author
2020Pontolis kohnoi Biewer et al. figs. Figs. 23–26)

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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()
genusPontolis
specieskohnoi

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.

Pontolis kohnoi Biewer et al. 2020
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Diagnosis
ReferenceDiagnosis
J. N. Biewer et al. 2020Pontolis kohnoi, sp. nov. differs from other species of Pontolis by having reduced to low frontal protuberances (c. 16[0]) and a single-rooted M1 (c. 77 [2]). It can be further differentiated from Po. barroni by a slender pterygoid strut (c. 13[0]) and by having postcanine teeth with large wear facets on their anterior and posterior
edges (c. 82[2]). It can be further differentiated from cf. Po. magnus by having a mandible with a straight ventral border (c. 45[0]), a mandibular condyle located slightly above the level of the tooth row (c. 47[0]), a medial shelf of the angular process (c. 49[1]), an anteroposteriorly short coronoid process (c. 50[0]), and lower postcanines with well-developed paraconid cusps (c. 66[0]).