- ectoderm
- ectoparasites
- ectopterygoid process
- ectotherms
- edeniana
- eiselti
- electrophoresis
- elegans
- elephantopus
- elongata
- Elseya
- Elusor
- emarginate
- emolli
- emoryi
- Emydoidea
- Emydura
- Emys
- Endangered
- endemic
- endochondral ribs
- endoderm
- endometrial glands
- endoparasitic
- entoplastron
- ephippium
- epidermal
- epididymides
- epifauna
- epiplastra
- epipterygoid
- Eretmochelys
- erhardi
- ernsti
- erosa
- Erymnochelys
- erythrocephala
- Española Island
- ethmoid fissure
- euphraticus
- evelynae
- exoccipital
- exoccipitals
- expansa
- extant
- external nares
- Extinct
- Extinct in the wild
- extraembryonic
- extragular