Ec
- Echinovadoma
- Echinovadomidae
Ei
- Einhornia
El
- Electra
- Electridae
- Elleschara
- Ellisina
- Elzerina
Em
- Emballotheca
- Eminooecia
- Eminooeciidae
- Emma
En
- Enantiosula
- Entalophora
- Entalophoridae
- Entalophoroecia
Eo
†Eofistulipora
Ep
- Epistomia
- Epistomiidae
Er
- Eridotrypa
Es
- Escharella
- Escharina
- Escharinidae
- Escharoides
- Escharopsis
Eu
- Eucheilopora
- Eucratea
- Eucrateidae
- Euginoma
- Euoplozoidae
- Euoplozoum
- Eupaxia
- Euritina
- Eurystomella
- Eurystomellidae
- Eurystrotos
- Eutaleola
- Euthyrisella
- Euthyrisellidae
- Euthyriselloidea
- Euthyroides
- Euthyroididae
Ex
- Exallozoon
- Exechonella
- Exechonellidae
†Exfenestella Morozova 1974
- †Exfenestella erkovae Shulga-Nesterenko 1951
- †Exfenestella fidelis Gorjunova and Morozova 1979
- †Exfenestella gzhelensis Schulga-Nesterenko 1951
- †Exfenestella parvula Trizna 1939
- †Exfenestella plana Morozova 1986
- †Exfenestella vrzhoseki Kiseleva 1982
Bryozoa → Stenolaemata → Fenestrida → Fenestellidae
- Exidmonea
- Exochella
- Exochellidae
- Exostesia