Dating of the triassic period

07-Feb-2018 13:45

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All agree, though, that the speed of evolution does change, however it is measured.These gaps affect our knowledge of timing, and of changes in body shape and function.The North and South Atlantic were still closed, although the Central Atlantic had begun to open up in the late Jurassic Period.By the middle of the period, ocean levels were much higher; most of the landmass we are familiar with was underwater.

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Sense of "repeated cycle of events" led to that of "interval of time." Meaning "dot marking end of a sentence" first recorded c.1600, from similar use in Medieval Latin (in late 16c.

Adaptive radiation is rapid evolutionary radiation. It is an increase in the number and diversity of species in each lineage.