El Eleganticeras Elephantoceras Ellipsoceras Elobiceras
Em Emaciaticeras Emileia Emilites Emperoceras
En Enayites Engonoceras Enosphinctes Entogonites
Eo Eoacrochordiceras Eoaraxoceras Eoasianites Eobeloceras Eocanites Eocephalites Eochetoceras Eocrioceratites Eodanubites Eoderoceras Eodesmoceras Eodouvilleiceras Eogaudryceras Eogonioloboceras Eogunnarites Eogymnites Eohecticoceras Eoheteroceras Eohyattoceras Eomadrasites Eonomismoceras Eopachydiscus Eoparalegoceras Eophyllites Eoprodromites Eoprotrachyceras Eopsiloceras Eosagenites Eoscaphites Eoschistoceras Eosturia Eotetragonites Eothalassoceras Eothinites Eotissotia Eowellerites thumb|right|225px
Ep Epacrochordiceras Epadrianites Epancyloceras Eparietites Epaspidoceras Epicanites Epiceltites Epiceltitoides Epicephalites Epiceratites Epicheloniceras Epicosmoceras Epideroceras Epiglyphioceras Epiglyptoxoceras Epigonites Epigymnites Epihoplites Epijuresanites Epileymeriella Epimayaites Epimorphoceras Epipallasiceras Epipeltoceras Episageceras Episculites Epistrenoceras Epithalassoceras Epitornoceras Epivirgatites Epiwocklumeria Epophioceras Eptitauroceras
Er Erbenoceras Eremites Erinoceras Erioliceras Eristavites Ermoceras Erycites Erymnoceras Erymnocerites