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This is a collection of lists of mammal gestation period estimated by experts in their fields. The mammals included are only viviparous (marsupials and placentals) as some mammals, which are monotremes (including platypuses and echidnas) lay their eggs. A marsupial has a short gestation period, typically shorter than placental.
Hominidae (great ape ancestors) speciate from the ancestors of the gibbon (lesser apes) between c. 20 to 16 Ma. They largely reduced their ancestral snout and lost the uricase enzyme (present in most organisms). [28] 16-12 Ma Homininae ancestors speciate from the ancestors of the orangutan between c. 18 to 14 Ma. [29]
A 2014 whole-genome molecular dating analysis indicated that the gibbon lineage diverged from that of great apes (Hominidae) around 17 million years ago (16.8 ± 0.9 Mya), based on certain assumptions about the generation time and mutation rate. [1] The extinct Bunopithecus sericus was a gibbon or gibbon-like ape. [3]
Between around 2 million and 22 million years ago, several dozen species of great apes inhabited Africa, Europe and Asia, fossil records show. Today, only gorillas, chimpanzees, bonobos ...
c. 18–12 Ma – estimated age of the Hominidae/Hylobatidae (great apes vs. gibbons) split. c. 16 Ma – The hippopotamus evolves. c. 15 Ma – First mastodons, bovids, and kangaroos. Australian megafauna diversify. c. 11 Ma – Estimated date for the origin of the modern Yangtze river. c. 10 Ma – Insects diversify. First large horses.
The Hominidae (/ h ɒ ˈ m ɪ n ɪ d iː /), whose members are known as the great apes [note 1] or hominids (/ ˈ h ɒ m ɪ n ɪ d z /), are a taxonomic family of primates that includes eight extant species in four genera: Pongo (the Bornean, Sumatran and Tapanuli orangutan); Gorilla (the eastern and western gorilla); Pan (the chimpanzee and the bonobo); and Homo, of which only modern humans ...
Sivapithecus (lit. ' Shiva's Ape ') (syn: Ramapithecus) is a genus of extinct apes.Fossil remains of animals now assigned to this genus, dated from 12.2 million years old [1] in the Miocene, have been found since the 19th century in the Sivalik Hills of the Indian subcontinent as well as in Kutch.
The giant apes fed primarily on fruit and other secondary options of low nutritional value. This diet, in addition to the apes’ large, less mobile frames, made them vulnerable to environmental ...