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Proterozetes ulysses

Mammalia - Carnivora - Otariidae

Taxonomy
Proterozetes ulysses was named by Barnes et al. (2006). Its type specimen is USNM 187108, a skull, and it is a 3D body fossil. Its type locality is Cape Blanco, south, which is in a Pleistocene marginal marine sandstone in the Port Orford Formation of Oregon.

Synonymy list
YearName and author
2006Proterozetes ulysses Barnes et al.
2015Proterozetes ulysses Boessenecker and Churchill figs. Fig. 2
2017Proterozetes ulysses Poust and Boessenecker
2018Proterozetes ulysses Berta et al. p. 215 figs. Fig. 5

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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
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
RankNameAuthor
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
Laurasiatheria
Scrotifera
Ferae()
CarnivoramorphaWyss and Flynn 1993
CarnivoraformesFlynn et al.
orderCarnivoraBowditch 1821
superfamilyArctoideaFlower 1869
Pinnipedimorpha
Pinnipedia()
superfamilyOtarioidea
familyOtariidae()
genusProterozetes
speciesulysses

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
L. G. Barnes et al. 2006A species of Otariini of larger adult body size than Zalophus spp., but smaller than Eumetopias jubatus, having cranium with slightly arched dorsal profile rather than being depressed in intertemporal region, posterior ends of nasal bones not greatly compressed transversely, nearly parallel-sided intertemporal region, relatively wide interorbital region, relatively large and laterally-projecting supraorbital process of frontal, intertemporal region merging smoothly with anterior part of braincase without pronounced anterolateral corner of braincase, elevated posterior part of sagittal crest present on braincase, palate only slightly arched and not developed as a trough as in Otaria flavescens, mastoid process shaped as a somewhat cuboid mass, paroccipital process not reduced in size but projecting posteriorly, deep fossa developed in ventral surface of crest formed between mastoid process and paroccipital process, and M2 present.