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Miodelphinus

Mammalia - Cetacea - Squalodelphinidae

Taxonomy
Miodelphinus was named by Tanaka and Nakagawa (2024). Its type is Miodelphinus miensis.

It was assigned to Squalodelphinidae by Tanaka and Nakagawa (2024).

Species
M. miensis (type species)

Synonymy list
YearName and author
2024Miodelphinus Tanaka and Nakagawa 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
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Whippomorpha
orderCetacea
—Pelagiceti
—Neoceti
suborderOdontoceti
superfamilyPlatanistoidea
familySqualodelphinidae()
genusMiodelphinus

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. †Miodelphinus Tanaka and Nakagawa 2024
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†Miodelphinus miensis Tanaka and Nakagawa 2024
Diagnosis
ReferenceDiagnosis
Y. Tanaka and R. Nakagawa 2024MPM-Fo1058 belongs to a clade of the Squalodelphinidae þ Platanistidae by having a narrow, fan-shaped restricted area between the postorbital ridge of the frontal and subtemporal crest (ch. 145), a deep sub-circular fossa of the squamosal (sensu de Muizon 1987) (ch. 153), and a funnel-like posterior part of the epitympanic hiatus of the periotic (chs 286) (see Discussion). MPM-Fo1058 belongs to the Squalodelphinidae (a clade with Squalodelphis fabianii) by having a large aperture for the cochlear aqueduct with a thin edge of the periotic (chs 188, 193), a deep, V-shaped left antorbital notch with an anteriorly pointed left antorbital process (chs 10, 36), and a squared pars cochlearis of the periotic (Bianucci et al., 2020). Miodelphinus miensis differs from other squalodelphinids and platanistids by having an almost straight ventral edge of the zygomatic process (ch. 116), a weak edge posterodorsal to the stapedial muscle fossa on the periotic (ch. 185), and a large posteriorly widened funnel-like articular depression that opens ventrally.
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: Burdigalian or 20.45000 to 15.98000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Burdigalian20.45 - 15.98Japan (Mie) M. miensis (235934)