PaleozoicWiktionary 原文构词拆分paleo-前缀Old; ancient or primitive (Combining form of old, ancient, and primitive) · Related to paleontology.+-zoic后缀Relating to some specified form of animal existence · Relating to some specified geologic period词源说明From paleo- + -zoic.释义（英文）形容词 Adjective(geology) Of a geologic era within the Phanerozoic eon that comprises the Cambrian, Ordovician, Silurian, Devonian, Carboniferous