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  • Triassic Period - Reptiles, Mammals, Evolution | Britannica
    The mammal-like reptiles, or therapsids, suffered pulses of extinctions in the Late Permian The group survived the boundary crisis but became virtually extinct by the end of the Triassic, possibly because of competition from more-efficient predators, such as the thecodonts
  • Evolution of mammals - Wikipedia
    The evolution of mammals has passed through many stages since the first appearance of their synapsid ancestors in the Pennsylvanian sub-period of the late Carboniferous period By the mid- Triassic, there were many synapsid species that looked like mammals
  • Triassic Animals – Discover The Animals That Lived In The . . .
    On this page you’ll find a list of animals that lived in the Triassic Period that were not dinosaurs The Triassic Period saw the appearance not only of the first dinosaurs, but also of the first true mammals
  • The Evolution of the First Mammals - ThoughtCo
    The first mammals evolved from therapsids at the end of the Triassic period Early mammals were very small and lived in niches avoided by larger dinosaurs After dinosaurs went extinct, mammals occupied new niches and evolved into diverse species
  • Triassic Period—Therapsids, cynodonts, and the first mammals . . .
    The Evolution of Mammals, Enchanted Learning Brief summary of the evolution of mammals, with links to information about the oldest mammal fossil from the Triassic
  • From Synapsids to Mammals: Triassic Mammal Ancestors
    Explore the evolution of Triassic mammal ancestors, from early synapsids to proto-mammals Discover key adaptations shaping mammalian history
  • The Triassic Period: the rise of the dinosaurs | Natural . . .
    By the Late Triassic there was a shift in dominance between the mammal-like reptiles and the archosaurs There are various theories as to what may have caused this, such as competition in a climate that was becoming steadily warmer and dryer or evolutionary stagnation
  • When Did Mammals First Appear? The Triassic Period and the . . .
    Over millions of years, mammals evolved a range of adaptations, including endothermy (warm-bloodedness), hair, and live birth, which contributed to their evolutionary success Mammals first appeared during the Triassic period, marking a crucial evolutionary milestone
  • The Triassic Period
    In many ways, the Triassic, lasting from 251 0 mya to 199 6 mya,* was a time of transition It was at this time that the world-continent of Pangea existed, altering global climate and ocean circulation
  • Triassic Period Facts and Information - National Geographic
    Life that survived the so-called Great Dying repopulated the planet, diversified into freshly exposed ecological niches, and gave rise to new creatures, including rodent-size mammals and the





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