herpetofaunaPronunciation: /ˈhəːpɪtə(ʊ)ˌfɔːnə/Definition of herpetofauna noun [mass noun] Zoology the reptiles and amphibians of a particular region, habitat, or geological period. Derivatives herpetofaunal adjective Origin:modern Latin, from Greek herpeton 'creeping thing, reptile' + faunaherpetofauna in other Oxford dictionaries Definition of herpetofauna in the US English dictionary