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.
Hopping Evolution of the Kangaroo Megazostrodon 200 million years ago The megazostrodon is commonly believed to be the first mammal on earth, it lived around 200million years ago, near the end of the age of the dinosaur. This creature was shrew/weasel like, and is widely considered the common ancestor for mammals.