Es Esericeras Eu Euagassiceras Euaptetoceras Euaspidoceras Eubaculites Eubostrychoceras Eubranoceras Eucalycoceras Eucoroniceras Eucycloceras Eudiscoceras Eudmetoceras Euflemingites Euhoplites Euhoploceras Euhystrichoceras Euisculites Eulophoceras Eulytoceras Eumedlicottia Eumorphoceras Euomphaloceras Eupachydiscus Euphylloceras Eupinacoceras Eupleuroceras Euprionoceras Euptychoceras Eurites Euroceras Eurycephalites Eurynoticeras Eusagenites Eutomoceras Euturrilites
Ex Exiteloceras Exotornoceras
Ez Ezilloella
F Fa Fagesia Falciclymenia Falciferella Falcitornoceras Fallacites Falloticeras Fanninoceras Farbesiceras Farnhamia Fascipericyclus Favrella Fayettevillea
Fe Fehlmannites Ferganoceras
Fi Ficheuria Fikaites Finiclymenia Fissilobiceras
Fl Flabellisphinctes Flemingites Flexiclymenia Flexispinites Flexoptychites Flickia
Fo Fontanelliceras Fontannesia Fontannesiella Foordites Forbescieras Forresteria Fournierella
Fr Frankites Frechiella Frechites Frenguelliceras Fresvillia Frogdenites
Fu Fuciniceras