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Timeline of Whale Evolution - Smithsonian Ocean Portal; Cetacean Paleobiology – University of Bristol; BBC: Whale's evolution; BBC: Whale Evolution – The Fossil Evidence; Hooking Leviathan by Its Past by Stephen Jay Gould; Research on the Origin and Early Evolution of Whales (Cetacea), Gingerich, P.D., University of Michigan
The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence , mainly fossils .
Whales are fully aquatic, open-ocean animals: they can feed, mate, give birth, suckle and raise their young at sea. Whales range in size from the 2.6 metres (8.5 ft) and 135 kilograms (298 lb) dwarf sperm whale to the 29.9 metres (98 ft) and 190 tonnes (210 short tons) blue whale, which is the
A whale’s body decomposes in three stages—Mobile Scavenger, Enrichment Opportunist, and Sulfophilic—and each stage provides its own benefits to a succession of deep sea creatures.
1944 — The publication of Tempo and Mode in Evolution by George Gaylord Simpson integrates paleontology into the modern evolutionary synthesis. 1946 — Reginald Sprigg discovers fossils of the Ediacaran biota in Australia. In the 1960s Martin Glaessner would show that they were pre-Cambrian. 1947 — Willard Libby introduces carbon-14 dating.
The pygmy right whale shares several characteristics with the right whales, with the exception of having a dorsal fin. Also, pygmy right whales' heads are no more than one quarter the size of their bodies, whereas the right whales' heads are about one-third the size of their bodies. [11] The pygmy right whale is the only extant member of its ...
Mosaic evolution – Evolution of characters at various rates both within and between species; Parallel evolution – Similar evolution in distinct species; Quantum evolution – Evolution where transitional forms are particularly unstable and do not last long; Recurrent evolution – The repeated evolution of a particular character
According to a release from "The Good Whale," after Free Willy became an unexpected hit, fans learned the orca who played Willy in the movie — a killed whale named Keiko — was ill and living ...