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Himalayacetus

Extinct aquatic mammal From Wikipedia, the free encyclopedia

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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 / 31.0; 77.0: paleocoordinates 3.5°N 69.7°E / 3.5; 69.7)[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]

Quick Facts Scientific classification, Binomial name ...

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]

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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

References

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