Acrotretella Ireland, 1961 † (additional source)
Acrotretella dizeugosa Valentine et al., 2006 † (original description)
Acrotretella siluriana Ireland, 1961 † (basis of record)
Artiotreta krizi Mergl, 2001 † (basis of record)
Artiotreta longisepta Valentine et al., 2003 † (additional source)
Artiotreta parva Ireland, 1961 † (basis of record)
Kosagittella Mergl, 2001 † (basis of record)
Kosagittella clara Mergl, 2001 † (basis of record)
Opsiconidion Ludvigsen, 1974 † (additional source)
Opsiconidion arcticon Ludvigsen, 1974 † (basis of record)
Opsiconidion podlasiensis Biernat, 1984 † (basis of record)
Orbiculoidea d'Orbigny, 1847 † (basis of record)
Paterula Barrande, 1879 † (basis of record)
Paterula bohemica Barrande, 1879 † (basis of record)
Paterulidae Cooper, 1956 † (additional source)
Rowellella Wright, 1963 † (taxonomy source)
Rowellella minuta Wright, 1963 † (basis of record)
Scaphelasmatidae Rowell, 1965 † (additional source)
Schizotreta Kutorga, 1848 † (basis of record)
Schizotreta elliptica (Kutorga, 1846) † (basis of record)