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Ambulocetus (Latin ambulare "to walk" + cetus "whale") is a genus of early amphibious cetacean [a] from the Kuldana Formation in Pakistan, roughly 48 or 47 million years ago during the Early Eocene . It contains one species , Ambulocetus natans (Latin natans "swimming"), known solely from a near-complete skeleton.
Ambulocetidae is a family of early cetaceans from Pakistan.The genus Ambulocetus, after which the family is named, is by far the most complete and well-known ambulocetid genus due to the excavation of an 80% complete specimen of Ambulocetus natans. [2]
Of the less than 10 fossils that have been described, one, Ambulocetus natans, is nearly complete and the main source of information concerning early cetacean evolution. The size of a male sea lion, it had a large head with a long snout and robust, strongly worn teeth.
Johannes Gerardus Marie (Hans) Thewissen is a Dutch-American paleontologist known for his significant contributions to the field of whale evolution.Thewissen's fieldwork has led to the discovery of key fossils that have shed light on the transition of whales from land to water, including the discovery of Ambulocetus, Pakicetus, Indohyus, and Kutchicetus.
A. natans is an abbreviation that may refer to: Ambulocetus natans, a fossil cetacean; Atractus natans, a snake; Aponogeton natans, a flowering plant; Alisma natans, now called Luronium natans, a flowering plant
Ambulocetus, which lived about 49 million years ago, was discovered in Pakistan in 1994. They were vaguely crocodile-like mammals, possessing large brevirostrine jaws. In the Eocene, ambulocetids inhabited the bays and estuaries of the Tethys Sea in northern Pakistan.
Ambulocetus natans, which lived about 49 million years ago, was discovered in Pakistan in 1994. It was probably amphibious, and looked like a crocodile. [24] In the Eocene, ambulocetids inhabited the bays and estuaries of the Tethys Ocean in northern Pakistan. [25]
Ambulocetus [3] [5] A. natans: H-GSP Loc. 9209 & 9204 Several specimens. An ambulocetid cetacean. Artiodactyla indet. [6] Chorlakki An astragalus and two calcaneum: These fossil remains are thought to be too large and robust to have belonged to the Chorlakki dichobunids or Indohyus. Attockicetus [3] [5] A. praecursor: H-GSP Loc. 9204