Hyphantozyga grandis (FOSSIL) Hoare & Sturgeon, 1980 †
Hyphantozyga granifera (FOSSIL) (de Koninck, 1876 †)
Hyphantozyga knighti (FOSSIL) Hoare & Sturgeon, 1980 †
Hyphantozyga matanensis (FOSSIL) Pan & Yu, 1993 †
Hyphantozyga noinskyi (FOSSIL) Mazaev, 2015 †
Hyphantozyga perattenuata (FOSSIL) Hoare & Sturgeon, 1980 †
Hyphantozyga pulchra (FOSSIL) Hoare & Sturgeon, 1980 †
Hyphantozyga textilis (FOSSIL) Hoare & Sturgeon, 1980 †
Levizygopleura charma (FOSSIL) Pan & Erwin, 2002 †
Levizygopleura elegans (FOSSIL) Mazaev, 2015 †
Microptychis cerithiformis (FOSSIL) (F.B. Meek& A.H. Worthen, 1860 †)
Microptychis constricta (FOSSIL) (J. de C. Sowerby,1821 †)
Microptychis expetendus (FOSSIL) Hoare & Sturgeon, 1981 †
Microptychis insolita (FOSSIL) B.S. Kues, 2002 †
Microptychis jacksoni (FOSSIL) Longstaff †
Microptychis occabus (FOSSIL) Hoare & Sturgeon, 1981 †
Microptychis permiana (FOSSIL) Batten, 1985 †
Microptychis trochus (FOSSIL) Knight, 1930 †
Microptychis turbineus (FOSSIL) Hoare & Sturgeon, 1981 †
Microptychis williamsi (FOSSIL) Knight, 1930 †
Microptychis wrighti (FOSSIL) Longst, 1912 †
Plocezyga abolescens (FOSSIL) Knight, 1930 †
Plocezyga acuminata (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga angularis (FOSSIL) Knight, 1930 †
Plocezyga conica (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga convertacostata (FOSSIL) Hoare, 1961 †
Plocezyga cordiformis (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga corona (FOSSIL) Knight, 1930 †
Plocezyga costata (FOSSIL) (Mark, 1912 †)
Plocezyga delicata (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga excellens (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga gruendeli (FOSSIL) A. Kaim, 2004 †
Plocezyga indica (FOSSIL) Reed, 1944 †
Plocezyga intermedia (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga lineata (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga lirata (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga mapesi (FOSSIL) A. Nützel, 1998 †
Plocezyga markae (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga obscura (FOSSIL) Hoare & Sturgeon, 1980 †
Plocezyga ornata (FOSSIL) (Mark, 1912 †)
Plocezyga ornatissima (FOSSIL) Hoare & Sturgeon, 1980 †