IPA: /ˌpeɪliˈoʊbaɪəˌlɪdʒɪst/
KK: /ˌpeɪliˈoʊbaɪələdʒɪst/
A scientist who studies the life forms that existed in the past, particularly through the examination of fossils.
The paleobiologist discovered new evidence about ancient marine life.
Paleobiologist → It is formed from "paleo-" (from Greek "palaios", meaning ancient) and "bio" (from Greek "bios", meaning life) and "-logist" (from Greek "logia", meaning study). The word refers to a scientist who studies ancient life forms.
Think of 'ancient' ('paleo-') life ('bio') being studied ('-logist') — that's what a paleobiologist does.