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Maiacetus inuus

Mammalia - Cetacea - Protocetidae

Taxonomy
Maiacetus inuus was named by Gingerich et al. (2009). Its type specimen is GSP-UM 3475a, a partial skeleton (partial skeleton and partially ossified near-term fetus), and it is a 3D body fossil. Its type locality is Kunvit, Habib Rahi Formation, which is in a Lutetian coastal shale in the Habib Rahi Formation of Pakistan. It is the type species of Maiacetus.

Synonymy list
YearName and author
2009Maiacetus inuus Gingerich et al. p. 3
2012Maiacetus inuus Gingerich p. 313 figs. Figure 4

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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()
RankNameAuthor
Mammaliamorpha
Mammaliaformes
classMammalia
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Artiodactylamorpha
Artiodactyla()
Whippomorpha
orderCetacea
familyProtocetidae
genusMaiacetus
speciesinuus

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.

Maiacetus inuus Gingerich et al. 2009
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Diagnosis
ReferenceDiagnosis
P. D. Gingerich et al. 2009Medium-sized protocetid archaeocete with a
skeleton 2.6 m in length and an estimated weight of 280–
390 kg. Skull has the medium-length rostrum, anteriorlypositioned
nares, large mandibular canals, narrow frontal shield,
broad cranial base, and large tympanic bullae typical of early
protocetids. Differs from contemporary Artiocetus clavis and
Rodhocetus balochistanensis in having solidly co-ossified left and right dentaries. In the ankle, the astragalus has deep proximal and
distal trochleae as in Rodhocetus, but differs in having an indented
dorsolateral border; cuboid is less deeply notched for the
calcaneum than in Artiocetus and more deeply notched than in
Rodhocetus. Metacarpals, carpal phalanges, and all hind limb
elements are shorter relative anterior thoracic centrum length than
comparable ratios in Rodhocetus.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Form: roller-shapedo
Ontogeny: modification of partso
Environment: marineo
Locomotion: actively mobileo
Life habit: aquatico
Depth habitat: surfaceo
Diet: carnivoreo
Reproduction: viviparouso
Created: 2005-03-06 14:19:05
Modified: 2017-04-17 10:41:18
Source: o = order
Reference: Uhen 2004

Age range: Lutetian or 48.07000 to 41.03000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Lutetian48.07 - 41.03Pakistan (Balochistan) Maiacetus inuus (type locality: 28981)