cainozoology|ˌkaɪnəʊzəʊˈɒlədʒɪ| [f.Gr. καινό-ς recent + zoology.] (See quot.) 1861R. E. Grant Divis. Anim.Kingd. 8 The history of existing animals belongs to Cainozoology, and that of extinct forms to Palæozoology.Ibid. (title), Cainozoology, the Natural History of Existing Animals.