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Berardius kobayashii

Mammalia - Cetacea - Ziphiidae

Taxonomy
Berardius kobayashii was named by Kawatani and Kohno (2021). Its type specimen is SCM 5530-6, a partial skull (incomplete skull including the left tympanic bulla and its corresponding periotic, lacking the rostral portion; the posterior fourth of the horizontal ramus of ), and it is a 3D body fossil. Its type locality is Sobama Beach, which is in a Serravallian/Tortonian terrestrial mudstone in the Tsurushi Formation of Japan.

Synonymy list
YearName and author
2021Berardius kobayashii Kawatani and Kohno p. 6 figs. Figs. 3-11

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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
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Whippomorpha
orderCetacea
—Pelagiceti
—Neoceti
suborderOdontoceti
—Amblyoccipita
—Stegoceti
familyZiphiidae
subfamilyBerardiinae()
genusBerardius
specieskobayashii

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.

†Berardius kobayashii Kawatani and Kohno 2021
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Diagnosis
ReferenceDiagnosis
A. Kawatani and N. Kohno 2021The species differs from all other Berardius species (i.e. B. arnuxii, B. bairdii and B.
minimus) by the following unique combination of characters: short nasals, with a ratio between the length of the medial suture of nasals on the vertex and the maximum width of nasals less than 0.4 (Char. 13, reversal). Although it is potentially a shared primitive trait with Archaeoziphius microglenoideus and Microberardius africanus, an extremely small size compared with the three other species (60–70% smaller than B. bairdii and B. arnuxii, 50% smaller than B. minimus).
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: piscivoref
Diet 2: carnivoref
Reproduction: viviparoussubo
Created: 2005-06-08 10:11:10
Modified: 2005-06-08 12:11:10
Source: f = family, subo = suborder, o = order
References: Uhen 2004, Nowak 1991

Age range: base of the Serravallian to the top of the Tortonian or 13.82000 to 7.24600 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Serravallian - Tortonian13.82 - 7.246Japan (Niigata) Berardius kobayashii (type locality: 13295)