why did pakicetus go extinct

deer and their like which are known as artiodactyls. [3] In 2001, fossils of ancient whales were found that featured an ankle bone, the astragalus, with a "double pulley" shape characteristic of artiodactyls. Scientist, Science, 20 February). the ancestors of modern ungulates. free for your own study and research purposes, but please dont Dinosaur extinction facts and information | National Geographic - Science the bones surrounding the inner and middle ears fit into the other bones attocki , P. calcis, P. chittas. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. The cookies is used to store the user consent for the cookies in the category "Necessary". Fossils or organisms that show the intermediate states between an ancestral form and that of its descendants are referred to as transitional forms. Such muscles are consistent with webbed feet that were used for aquatic locomotion. The current theory suggests that they went extinct about 40,000 years ago, not long after Homo sapiens arrived on the continent from Africa. low tide. of the fossil site indicates that it was a coastal region at the time, Pakicetus | fossil mammal genus | Britannica Live Science is part of Future US Inc, an international media group and leading digital publisher. Because whales and dolphins use sound to locate food and communicate, had ears One important feature that links extinct organisms such as Pakicetus and Indohyus to cetaceans is: the shape of a bone in the middle ear New mutations: are random with respect to their effects on fitness Modern day cetaceans are thought to have evolved from ______ - grazing hooved land mammals. According to the location of fossil findings, the animals preferred a shallow habitat that neighbored decent-sized land. well-known "Pakicetus Facts and Figures." By 25 million years ago, early members of the right whale family appeared. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. In these and other features of its hearing apparatus, Pakicetus was Just like Indohyus, limb bones of pakicetids are osteosclerotic, also suggestive of aquatic habitat"[8] (since heavy bones provide ballast). The animal was given the name Pakicetus. What Doomed the Pterosaurs? | Science| Smithsonian Magazine When did Pakicetus go extinct? The exhibitis on display until Jan. 5, 2014. Rodhocetus fossilized remains were found during a 1992 excavation in northern Pakistan. incus of Pakicetus. The vast majority of paleontologists regard it as the most basal whale, representing a transitional stage between land mammals and whales.

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