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.
Jaws to ears in the ancestors of mammals. All the animals you see on this evogram are synapsids, the group that gave rise to the mammals. Sometimes synapsids are called mammal-like reptiles; however, that is misleading because synapsids are not reptiles.