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Cynthiacetus peruvianus

Mammalia - Cetacea - Basilosauridae

Taxonomy
Cynthiacetus peruvianus was named by Martinez-Cáceres and Muizon (2011). Its type specimen is MNHN.F.PRU10, a skeleton (virtually complete skull & skeleton), and it is a 3D body fossil. Its type locality is Paracas Bay, which is in a Priabonian coastal horizon in the Otuma Formation of Peru.

It was recombined as Pontogeneus peruvianus by Gingerich (2015).

Synonymy list
YearName and author
2011Cynthiacetus peruvianus Martinez-Cáceres and Muizon figs. Fig. 1-6
2013Cynthiacetus peruvianus Uhen p. 9 figs. Figure 6
2015Pontogeneus peruvianus Gingerich p. 184
2017Cynthiacetus peruvianus Martínez-Cáceres et al. p. 16
2018Cynthiacetus peruvianus Uhen

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Eugnathostomata
—Teleostomi(Bonaparte 1836)
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
—Pelagiceti
familyBasilosauridae
genusCynthiacetus
speciesperuvianus

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.

†Cynthiacetus peruvianus Martinez-Cáceres and Muizon 2011
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Diagnosis
ReferenceDiagnosis
M. Martínez-Cáceres et al. 2017Cynthiacetus peruvianus di ers from C. maxwelli in having one cusp less on both mesial and distal edges on p3 and p4; anteroposteriorly shorter and higher dome- shaped neural arch on the atlas; and a proximo-distally longer and anteroposteriorly more slender humerus, radius and ulna. Cynthiacetus peruvianus presents the largest number of thoracic vertebrae (20) and ribs observed in all known cetaceans. Besides, the spinal process in anterior thoracic vertebrae is more vertical than in Basilosaurus, Dorudon, Saghacetus, and Zygorhiza. However, because these two characters cannot be con rmed in C. maxwelli, they may constitute synapomorphies of the genus.
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: Priabonian or 37.71000 to 33.90000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Priabonian37.71 - 33.9Peru Archaeoceti indet. (type locality: 63838)