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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]
Ambulocetus probably swam with its hind feet like a modern otter, and was incapable of supporting its own weight on land. It probably was an ambush hunter like modern crocodiles. It probably was an ambush hunter like modern crocodiles.
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.
Kala- Chitta are Punjabi words meaning Kala the Black and Chitta means white. The range thrusts eastward across the Potohar plateau towards Rawalpindi. [1] [2] [3] Pakistan's Kuldana Formation is best known for its fossil Eocene mammals, including primitive cetaceans such as Pakicetus, Ambulocetus and Attockicetus.
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.
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A transitional fossil is any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group. [1] This is especially important where the descendant group is sharply differentiated by gross anatomy and mode of living from the ancestral group.