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.
The first mammal-like reptiles occurred during the Permian Period, about 300 million years ago. Primitive mammals appeared in the Mesozoic Era along with dinosaurs in the Jurassic Period, about 250 million years ago. The Age of Mammals began after the extinction of the dinosaurs and beginning of the Cenozoic Era during the Quaternary Period, about 65 million years ago. socratic Subjects