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Tranatocetus argillarius

Mammalia - Cetacea - Cetotheriidae

Taxonomy
Mesocetus argillarius was named by Roth (1978). Its type specimen is MGUHVP 2319, a partial skull, and it is a 3D body fossil. Its type locality is Gram Brick Works, which is in a Tortonian marine claystone in the Gram Formation of Denmark. It is the type species of Tranatocetus.

It was considered an invalid subgroup of Cetotherioidea by Steeman (2007) and Steeman (2010); it was considered an invalid subgroup of Chaeomysticeti by Bisconti et al. (2013); it was recombined as Tranatocetus argillarius by Gol'din and Steeman (2015).

Synonymy list
YearName and author
1978Mesocetus argillarius Roth p. 64 figs. Fig. 2-7
2015Tranatocetus argillarius Gol'din and Steeman p. 6

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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
Theriamorpha(Rowe 1993)
RankNameAuthor
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Artiodactylamorpha
Artiodactyla()
Whippomorpha
orderCetacea
Pelagiceti
Neoceti
suborderMysticeti
Chaeomysticeti()
familyCetotheriidae()
genusTranatocetus
speciesargillarius()

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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Diagnosis
ReferenceDiagnosis
P. Gol'din and M. E. Steeman 2015Modified from [12]. The scapula is anteroposteriorly elongated; the glenoid cavity displaced toward the anterior end. The deltopectoral crest of the humerus is long. Differ- ing from all Plicogulae, except Mesocetus longirostris, Pelocetus calvertensis and Parietobalaena campiniana, in: retaining plesiomorphic features of the lower jaw: the dorsal border in front of the mandibular condyle gradually ascending towards the coronoid process, wide mandibular foramen and wide mandibular canal. Differing from Mesocetus longirostris, “Aulocetus” latus, “Cetotherium” megalophysum and “Cetotherium” vandelli in: the wide skull with laterally expanded squamosals; straight ascending processes of maxillae which extend parallel to each other (rather than tapering and converging posteriorly); small lateral projection of the poste- rior meatal crest on the posterolateral side of the postglenoid process and paroccipital processes extending far posterior to the occipital condyles. Sharing only with Mesocetus longirostris: pos- terior ends of premaxillae fused with the maxillae and divided on the vertex by long, narrow and high (vertical plate-like) nasals; cervical vertebrae with wide transverse foramina, almost as wide as the centra (see also [12]).
Measurements
No measurements are available
Composition: hydroxyapatitesubo
Form: roller-shapedo
Ontogeny: modification of partso
Environment: marinesubo
Locomotion: actively mobileo
Life habit: aquaticsubo
Depth habitat: surfaceo
Diet: carnivoresubo
Diet 2: suspension feedersubo
Reproduction: viviparouso
Created: 2005-03-06 14:20:41
Modified: 2005-03-06 16:34:40
Source: subo = suborder, o = order
Reference: Uhen 2004

Age range: Tortonian or 11.62000 to 7.24600 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Tortonian11.62 - 7.246Denmark (Jutland) Mesocetus argillarius (type locality: 34521)