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Pomatodelphis inaequalis

Osteichthyes - Cetacea - Platanistidae

Taxonomy
Pomatodelphis inaequalis was named by Allen (1921). Its type specimen is MCZ 15750, a partial skull (base of the right maxilla), and it is a 3D body fossil. Its type locality is Homeland Mine, which is in a Tortonian lagoonal sandstone in the Peace River Formation of Florida. It is the type species of Potamodelphis.

Synonyms
  • Schizodelphis depressus was named by Allen (1921) [Florida Geological Survey]. Its type specimen is FGS 828, a partial skull (rostrum), and it is a 3D body fossil. Its type locality is Homeland Mine, which is in a Tortonian lagoonal sandstone in the Peace River Formation of Florida.

    It was recombined as Cyrtodelphis depressus by Hay (1930); it was synonymized subjectively with Pomatodelphis inaequalis by Morgan (1994).
Synonymy list
YearName and author
1921Schizodelphis depressus Allen pp. 145-147 figs. Plate 9, figs 1-3
1921Pomatodelphis inaequalis Allen p. 148
1930Cyrtodelphis depressus Hay p. 591
1930Pomatodelphis inaequalis Hay p. 591
1952Pomatodelphis inequalis Sherman p. 99
1952Schizodelphis depressus Sherman p. 99
1959Pomatodelphis inaequalis Kellogg
1994Pomatodelphis inaequalis Gottfried et al. p. 233
1994Pomatodelphis inaequalis Morgan p. 251
2006Pomatodelphis inaequalis Barnes p. 32
2006Pomatodelphis inaequalis Hulbert and Whitmore p. 19
2008Pomatodelphis inaequalis Uhen et al. p. 581
2016Pomatodelphis inaequalis Boersma and Pyenson p. 12 figs. Figure 10
2023Pomatodelphis inaequalis Godfrey and Lambert p. 88

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
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
familyPlatanistidae()
genusPomatodelphis
speciesinaequalis

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.

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Invalid names: Schizodelphis depressus Allen 1921 [synonym]
Diagnosis
ReferenceDiagnosis
G. M. Allen 1921ong-beaked dolphins resembling Schizodelphis in general form of the skull except that the rostrum has a convex expansion of the maxillary outline at the proximal end of the tooth rows; combined width of lower jaws narrower than the upper so that the lower tooth rows close inside the upper (like the lid of a pot--riua); teeth of lower jaw directed upward into the maxillary, where the tips of the more posterior are received in shallow pits, instead of being, as in Schizodelphis, directed outward and interlocking with the maxillary teeth outside the tooth rows.
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
Reproduction: viviparoussubo
Created: 2005-06-08 10:11:09
Modified: 2005-06-08 12:11:09
Source: f = family, subo = suborder, o = order
References: Nowak 1991, Uhen 2004

Age range: base of the Langhian to the top of the Tortonian or 15.98000 to 7.24600 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Langhian15.98 - 13.82USA (Maryland) Pomatodelphis inaequalis (98328)
Serravallian13.82 - 11.63USA (Maryland) Pomatodelphis inaequalis (70843 71816)
Tortonian11.63 - 7.246USA (Florida) Platanistidae indet. (45454) Pomatodelphis inaequalis (45452 45453 45456) Pomatodelphis inaequalis, Schizodelphis depressus (type locality: 45455)
Hemphillian9.4 - 4.7USA (Alabama) Pomatodelphis inaequalis (18559 81498)