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Lophocetidae

Mammalia - Cetacea - Lophocetidae

Taxonomy
Lophocetidae was named by Barnes (1978) [Originally designated a subfamily by Barnes 1978. Elevated to family rank by Guo & Kohno 2023.].

It was assigned to Kentriodontoidea by Guo and Kohno (2023).

Synonymy list
YearName and author
1978Lophocetidae Barnes
2023Lophocetidae Guo and Kohno p. 5

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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
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Whippomorpha
orderCetacea
—Pelagiceti
—Neoceti
suborderOdontoceti
infraorderDelphinida
superfamilyKentriodontoideaSlijper 1936
familyLophocetidaeBarnes 1978
familyLophocetidaeBarnes 1978

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.

Fm. †Lophocetidae Barnes 1978
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G. †Lophocetus Cope 1867
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†Lophocetus calvertensis Harlan 1842
†Lophocetus repenningi Barnes 1978
G. †Platysvercus Guo and Kohno 2023
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†Platysvercus ugonis Guo and Kohno 2023
Diagnosis
ReferenceDiagnosis
Z. Guo and N. Kohno 2023It differs from Kentriodontidae in having the following derived characters: 24–27 mandibular teeth (character 37), the premaxillary foramen located medi- ally (character 70), a distinctly inflated process of the nasal at its anterolateral corner pres- ent, which tapers in width anteriorly and ventrally, and the angle between the dorsal and anterior face of the process rounded over (character 133), the posterior part of the suture between the nasals marked by a deep cleft (character 134), the postglenoid process ventrally tapers (character 169), the stylomastoid fossa situated on the posterior face of the pars cochlearis, posterodorsal to the stapedial muscle fossa (character 258), the dorsal edge of the tegmen tympani lateral to the aperture for the vestibular aqueduct presents as a faint ridge (character 273), and the deltopectoral tuberosity of humerus proximodistally centered (character 355).
Measurements
No measurements are available
Composition: hydroxyapatitesubo
Form: roller-shapedo
Ontogeny: modification of partso
Environment: marine, freshwatersubo
Locomotion: actively mobileo
Life habit: aquatico
Depth habitat: surfaceo
Diet: carnivoresubo
Reproduction: viviparoussubo
Created: 2005-03-06 14:21:39
Modified: 2005-09-22 15:42:08
Source: subo = suborder, o = order
Reference: Uhen 2004

Age range: base of the Burdigalian to the top of the Early/Lower Clarendonian or 20.45000 to 9.40000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Burdigalian20.45 - 15.98Japan (Akita) Platysvercus ugonis (229220)
Early/Lower Clarendonian12.5 - 9.4USA (Florida) Lophocetus sp. (45461)
Tortonian11.63 - 7.246USA (California) Lophocetus repenningi (46071)
Tortonian11.63 - 7.246USA (Maryland) Delphinus calvertensis (86500) Lophocetus calvertensis (219172)