age of mammals

Noun age of mammals has 1 sense

• age of mammals(n = noun.time) cenozoic, cenozoic era - approximately the last 63 million years;
is a part of phanerozoic, phanerozoic aeon, phanerozoic eon
has parts: age of man, quaternary, quaternary period, tertiary, tertiary period
is a kind of era, geological era