Definition of float in the AudioEnglish.org Dictionary. Meaning of float. What does float mean? Proper usage and pronunciation (in phonetic transcription) of the word float. Information about float in the AudioEnglish.org dictionary, synonyms and antonyms.
Mammals evolved from a group of mammal-like reptiles called the Synapsids, specifically the Therapsids, in the Triassic period, around 250 million years ago.
A Brief History of Marsupials. By 110 million years ago, mammals had diverged into two distinct groups, the placental mammals (a group that includes humans and most modern mammals) and the marsupial mammals (a group that includes koalas, kangaroos, wombats, and pouched mice). Brief History of Marsupials. By 110 million years ago, mammals had diverged into two distinct groups, the placental mammals (a group that includes humans and most modern mammals) and the marsupial mammals (a group that includes koalas, kangaroos, wombats, and pouched mice).