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  2. Evolution of mammals - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_mammals

    The evolution of the digestive system has formed a significant influence in mammal evolution. With the emergence of mammals, the digestive system was modified in a variety of ways depending on the animal's diet. For example, cats and most carnivores have simple large intestines, while the horse as a herbivore has a voluminous large intestine. [127]

  3. Timeline of the evolutionary history of life - Wikipedia

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

    Many modern mammal groups begin to appear: first glyptodonts, ground sloths, canids, peccaries, and the first eagles and hawks. Diversity in toothed and baleen whales. 33 Ma Evolution of the thylacinid marsupials . 30 Ma First balanids and eucalypts, extinction of embrithopod and brontothere mammals, earliest pigs and cats. 28 Ma

  4. Dinosaur - Wikipedia

    en.wikipedia.org/wiki/Dinosaur

    Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research.

  5. Plesiadapis - Wikipedia

    en.wikipedia.org/wiki/Plesiadapis

    Plesiadapis is one of the oldest known primate-like mammal genera which existed about 58–55 million years ago in North America and Europe. [2] [3] Plesiadapis means "near-Adapis", which is a reference to the adapiform primate of the Eocene period, Adapis.

  6. Historic Dinosaur Dominance May Cause Present-Day Aging ... - AOL

    www.aol.com/historic-dinosaur-dominance-may...

    “For over 100 million years when dinosaurs were the dominant predators, mammals were generally small, nocturnal, and short-lived.” The pressure to stay alive eliminated the genes needed for ...

  7. Evolution of primates - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_primates

    The evolutionary history of the primates can be traced back 57-90 million years. [1] One of the oldest known primate-like mammal species, Plesiadapis, came from North America; [2] another, Archicebus, came from China. [3] Other similar basal primates were widespread in Eurasia and Africa during the tropical conditions of the Paleocene and Eocene.

  8. Mammals put brawn before brains after dinosaur extinction - AOL

    www.aol.com/mammals-put-brawn-brains-dinosaur...

    It had previously been thought the brains of mammals generally grew over time in the wake of the dinosaurs’ demise. Mammals put brawn before brains after dinosaur extinction – study Skip to ...

  9. Oldest-known bat skeletons shed light on evolution of flying ...

    www.aol.com/news/oldest-known-bat-skeletons-shed...

    The two oldest-known fossil skeletons of bats, unearthed in southwestern Wyoming and dating to at least 52 million years ago, are providing insight into the early evolution of these flying mammals ...