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.
For example, mammals (Mammalia) are an evolutionary lineage within Vertebrata [presence of backbone] that is defined successively as Gnathostomata [hinged, opposable jaws], Tetrapoda [four pentadactyl limbs], Amniota [amniotic egg membrane], and Synapsida [single temporal opening in the skull].or example, mammals (Mammalia) are an evolutionary lineage within Vertebrata [presence of backbone] that is defined successively as Gnathostomata [hinged, opposable jaws], Tetrapoda [four pentadactyl limbs], Amniota [amniotic egg membrane], and Synapsida [single temporal opening in the skull].