Platyceratidae Hall, 1859
Cyclonema ampullosum
Cyclonema ananas
Cyclonema apicatum
Cyclonema australis (Etheridge)
Cyclonema bellulum
Cyclonema bilex (Conrad, 1842)
Cyclonema bilix
Cyclonema boreale
Cyclonema canaliculata
Cyclonema cancellatum
Cyclonema cives
Cyclonema compar
Cyclonema composita
Cyclonema consepultum
Cyclonema convergens
Cyclonema crebristria
Cyclonema cushingi
Cyclonema daytonensis
Cyclonema decora
Cyclonema delicatula
Cyclonema derelictum
Cyclonema dowlingii
Cyclonema filicinctus
Cyclonema formosum
Cyclonema gracile
Cyclonema guilleri
Cyclonema gyronemoides
Cyclonema hageri
Cyclonema hallianum
Cyclonema humerosum
Cyclonema inaequistriatum
Cyclonema inflatum
Cyclonema infrequens
Cyclonema inopinata
Cyclonema intermedium
Cyclonema karlsteinensis
Cyclonema laudabile
Cyclonema lepidula
Cyclonema leptonotum
Cyclonema lilydalensis (Etheridge)
Cyclonema limatum
Cyclonema lineatum
Cyclonema lydiamariarum
Cyclonema marylandense
Cyclonema mediale
Cyclonema minuta
Cyclonema modestum
Cyclonema montrealense
Cyclonema niagarensis
Cyclonema nodulosum
Cyclonema obsolescens
Cyclonema parvimedium
Cyclonema percarinata
Cyclonema percingulatum
Cyclonema praecipitum
Cyclonema rupestre
Cyclonema servus
Cyclonema simulans
Cyclonema statshiunaica
Cyclonema sublaeve
Cyclonema subundata
Cyclonema sulphuriferum
Cyclonema tenuissimum
Cyclonema textilis
Cyclonema thalia
Cyclonema timida
Cyclonema timidum
Cyclonema trepidans
Cyclonema varians
Cyclonema varicosum
Cyclonema varispirum
Cyclonema ventricosa
Cyclonema vulgaris
Dyeria carens
Ploconema bohemicum
Ploconema protendens