[ ˌfan(ə)rə(ʊ)'zəʊɪk ]
■ adjective Geology relating to or denoting the aeon covering the whole of time since the beginning of the Cambrian period about 570 million years ago (comprising the Palaeozoic, Mesozoic, and Cenozoic eras).
Origin
C19: from Gk phaneros 'visible, evident' + zōion 'animal' + -ic .