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.
Mammals (a class, not a kingdom) evolved from the class of reptiles (not dinosaurs). Birds are the only homeothermic (warm-blooded) animals alive that are not mammals. On the other hand, they are directly descended from dinosaurs, a specific type of reptile, and we are not.