When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Evolution of reptiles - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_reptiles

    The origin of the reptiles lies about 320–310 million years ago, in the swamps of the late Carboniferous period, when the first reptiles evolved from advanced labyrinthodonts. [2] The oldest known animal that may have been an amniote , a reptile rather than an amphibian , is Casineria [ 3 ] [ 4 ] (though it has also been argued to be a ...

  3. Evolution of primates - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_primates

    5 Evolution of New World monkeys. 6 Evolution of Old World monkeys. ... The evolutionary history of the primates can be traced back 57-90 million years. [1]

  4. Primate - Wikipedia

    en.wikipedia.org/wiki/Primate

    The Old World species are divided into apes and monkeys depending on the number of cusps on their molars: monkeys have four, apes have five [73] - although humans may have four or five. [79] The main hominid molar cusp evolved in early primate history, while the cusp of the corresponding primitive lower molar (paraconid) was lost. Prosimians ...

  5. How reptiles took over the world - AOL

    www.aol.com/reptiles-took-over-world-110000291.html

    Similarly, climate warming that occurred millions of years ago helped reptiles evolve faster, diversify, and conquer the world, says a new study. Researchers have long believed the extinction of ...

  6. Timeline of the evolutionary history of life - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the...

    Evolution of Homo antecessor. The last members of Paranthropus die out. 1 Ma First coyotes. 810 ka First wolves: 600 ka Evolution of Homo heidelbergensis. 400 ka First polar bears. 350 ka Evolution of Neanderthals. 300 ka Gigantopithecus, a giant relative of the orangutan from Asia dies out. 250 ka Anatomically modern humans appear in Africa.

  7. Evolution of mammals - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_mammals

    Figure 1:In mammals, the quadrate and articular bones are small and part of the middle ear; the lower jaw consists only of dentary bone.. While living mammal species can be identified by the presence of milk-producing mammary glands in the females, other features are required when classifying fossils, because mammary glands and other soft-tissue features are not visible in fossils.

  8. Reptile - Wikipedia

    en.wikipedia.org/wiki/Reptile

    Reptiles, from Nouveau Larousse Illustré, 1897–1904, notice the inclusion of amphibians (below the crocodiles). In the 13th century, the category of reptile was recognized in Europe as consisting of a miscellany of egg-laying creatures, including "snakes, various fantastic monsters, lizards, assorted amphibians, and worms", as recorded by Beauvais in his Mirror of Nature. [7]

  9. Synapsida - Wikipedia

    en.wikipedia.org/wiki/Synapsida

    Synapsida [a] is a diverse group of tetrapod vertebrates that includes all mammals and their extinct relatives. It is one of the two major clades of the group Amniota, the other being the more diverse group Sauropsida (which includes all extant reptiles and birds).