Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohors: Theria
Cohors: Eutheria
Infraclassis: Placentalia
Cladus: Boreoeutheria
Superordo: Laurasiatheria
Cladus: Scrotifera
Cladus: Ferungulata
Cladus: Euungulata
Ordo: Artiodactyla
Cladus: Artiofabula
Cladus: Cetruminantia
Subordo: Whippomorpha
Infraordo: Cetacea
Familia: †Pakicetidae
Genus: Himalayacetus
Species: H. subathuensis
Name
Himalayacetus Bajpai & Gingerich, 1998
Gender
masculine
Type species
Himalayacetus subathuensis Bajpai & Gingerich, 1998, by monotypy
References
cited sources
Bajpai, S.; Gingerich, P.D. 1998: A new Eocene archaeocete (Mammalia, Cetacea) from India and the time of origin of whales. PNAS, 95: 15464–15468. JSTOR PDF
Links
ION
Himalayacetus is an extinct genus of carnivorous aquatic mammal of the family Ambulocetidae. The holotype was found in Himachal Pradesh, India, (31.0°N 77.0°E: paleocoordinates 3.5°N 69.7°E)[2] in what was the remnants of the ancient Tethys Ocean during the Early Eocene. This makes Himalayacetus the oldest archaeocete known, extending the fossil record of whales some 3.5 million years.[3]
Himalayacetus lived in the ancient coastline of the ancient Tethys Ocean before the Indian Plate had collided with the Cimmerian coast. Like Gandakasia, Himalayacetus is only known from a single jaw fragment, making comparisons to other ambulocetids difficult.[4]
Description
Upon its discovery, Himalayacetus was described as a pakicetid because the dentary has a small mandibular canal and a dentition similar to Pakicetus.[3] Thewissen, Williams & Hussain 2001 assigned Himalaycetus to the ambulocetids.
Etymology
Himalayacetus was named by Bajpai & Gingerich 1998. Its type is Himalayacetus subathuensis after the Himalayas, cetus, "whale", and the Subathu Formation, the type locality.[5]
Taxonomy
It was considered monophyletic by Uhen (2010). It was assigned to Pakicetidae by Bajpai and Gingerich (1998) and McLeod and Barnes (2008); and to Ambulocetidae by Thewissen et al. (2001) and Uhen (2010).[6]
Notes
Bajpai & Gingerich 1998.
Kuthar Nala (Eocene of India) in the Paleobiology Database. Retrieved June 2013.
Bajpai & Gingerich 1998, Abstract
Thewissen, JGM. "Ambulocetidae: The First Coastal Whales". Archived from the original on 3 April 2013. Retrieved 1 February 2013.
Bajpai & Gingerich 1998, p. 15464
Himalayacetus in the Paleobiology Database. Retrieved June 2013.
References
Wikispecies has information related to Himalayacetus.
Bajpai, Sunil; Gingerich, Philip D (December 1998). "A new Eocene archaeocete (Mammalia, Cetacea) from India and the time of origin of whales" (PDF). PNAS. 95 (26): 15464–68. Bibcode:1998PNAS...9515464B. doi:10.1073/pnas.95.26.15464. OCLC 678707438. PMC 28065. PMID 9860991.
Thewissen, J. G. M.; Williams, E. M.; Hussain, S.T. (2001). "Eocene mammal faunas from northern Indo-Pakistan" (PDF). Journal of Vertebrate Paleontology. 21 (2): 347–66. doi:10.1671/0272-4634(2001)021[0347:EMFFNI]2.0.CO;2. OCLC 631973716. S2CID 130701636.
Nomenclator Zoologicus
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