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Species of the infraorder Cetacea A phylogenetic tree showing the relationships among cetacean families. [1]The evolution of cetaceans is thought to have begun in the Indian subcontinent from even-toed ungulates (Artiodactyla) 50 million years ago (mya) and to have proceeded over a period of at least 15 million years. [2]
Dinosaurs Alive! is a 2007 IMAX documentary produced by Giant Screen Films about various dinosaurs that inhabited the Earth between 251 and 65 Ma.The documentary features animals from the Triassic period of New Mexico to the Cretaceous period of Mongolia, as well as the American Museum of Natural History's research on both periods.
Basilosaurus (meaning "king lizard") is a genus of large, predatory, prehistoric archaeocete whale from the late Eocene, approximately 41.3 to 33.9 million years ago (mya). ). First described in 1834, it was the first archaeocete and prehistoric whale known to scienc
Livyatan is an extinct genus of macroraptorial sperm whale containing one known species: L. melvillei.The genus name was inspired by the biblical sea monster Leviathan, and the species name by Herman Melville, the author of the famous novel Moby-Dick about a white bull sperm whale.
The Cenozoic is full of mammals both strange and familiar, including chalicotheres, creodonts, whales, primates, entelodonts, sabre-toothed cats, mastodons and mammoths, three-toed horses, giant rhinoceros like Paraceratherium, the rhinoceros-like brontotheres, various bizarre groups of mammals from South America, such as the vaguely elephant ...
Cowboys vs Dinosaurs: 2015: United States [citation needed] The Crater Lake Monster: 1977: United States [citation needed] Creation: 1931 United States [18] [19] David Attenborough’s Natural History Museum Alive: 2014 United Kingdom Documentary [20] [21] Destroy All Monsters: 1968: Japan: Godzilla Franchise [citation needed] Dino Dana: The ...
Blue whales have returned to a part of the Indian Ocean where the species was once wiped out by whaling decades ago. Researchers in the Seychelles have captured footage of the marine mammals in ...
By 40 Ma ago, cetaceans had attained a length of 20 m (66 ft) or more in Basilosaurus, an elongated, serpentine whale that differed from modern whales in many respects and was not ancestral to them. Following this, the evolution of large body size in cetaceans appears to have come to a temporary halt and then to have backtracked, although the ...