- nanus
- nares
- nasopalatine
- nasopharyngeal lining
- nasuta
- natalensis
- Natator
- nebulosa
- nelsoni
- neotype
- neural bones
- neustophagia
- niche
- nictitating membrane
- niger
- nigrinoda
- nikolskii
- Nilssonia
- nocturnal
- nogueyi
- nomen nudum
- nomen oblitum
- nomenclature
- notch
- Notochelys
- notochord
- novaeguineae
- nuchal bones
- nucleolus