Cyrtonellidae Knight & Yochelson, 1958
Scenella affinis
Scenella anomala
Scenella augusta
Scenella barrandei
Scenella beloitensis
Scenella compressa
Scenella conica
Scenella conicum
Scenella magnifica
Scenella mira
Scenella montrealensis
Scenella obtusa
Scenella orithyia
Scenella pretensa
Scenella radialis
Scenella reticulata
Scenella tenuistriata Chapman, 1911
Scenella unicarinata
Scenella varians Walcott
Scenella venillia
