Plocezyga delicata (FOSSIL) Hoare & Sturgeon, 1980 †
Pseudozygopleura deloi (FOSSIL) Knight, 1930 †
Hemizyga dubia (FOSSIL) Girty, 1915 †
Hemizyga elegans (FOSSIL) Girty, 1915 †
Levizygopleura elegans (FOSSIL) Mazaev, 2015 †
Pseudozygopleura eucharis (FOSSIL) Hoare, 1961 †
Plocezyga excellens (FOSSIL) Hoare & Sturgeon, 1980 †
Pseudozygopleura eximia (FOSSIL) Hoare & Sturgeon, 1985 †
Gamizyga expansa (FOSSIL) Hoare & Sturgeon, 1980 †
Microptychis expetendus (FOSSIL) Hoare & Sturgeon, 1981 †
Hyphantozyga fenestrata (FOSSIL) Hoare & Sturgeon, 1980 †
Hyphantozyga filicosta (FOSSIL) Hoare, 1961 †
Pseudozygopleura funis (FOSSIL) Knight, 1930 †
Hyphantozyga fusiforma (FOSSIL) Hoare & Sturgeon, 1980 †
Gamizyga girtyi (FOSSIL) Hoare & Sturgeon, 1980 †
Pseudozygopleura girtyi (FOSSIL) Knight, 1930 †
Hemizyga globosa (FOSSIL) Batten, 1985 †
Hemizyga gracilis (FOSSIL) Girty 1915 †
Hyphantozyga gracilis (FOSSIL) Knight, 1930 †
Pseudozygopleura gracilis (FOSSIL) E.K. Yoo, 1994 †
Pseudozygopleura gradatus (FOSSIL) Hoare & Sturgeon, 1981 †
Pseudozygopleura granda (FOSSIL) (B.S. Kues & R.L. Batten,2001 †)
Hemizyga grandicostata (FOSSIL) Girty, 1915 †
Hyphantozyga grandis (FOSSIL) Hoare & Sturgeon, 1980 †
Hyphantozyga granifera (FOSSIL) (de Koninck, 1876 †)
Plocezyga gruendeli (FOSSIL) A. Kaim, 2004 †
Hemizyga heliciforma (FOSSIL) Batten, 1966 †
Pseudozygopleura hoarei (FOSSIL) A. Nützel, 1998 †
Stephanozyga ignorata (FOSSIL) (Trautschold, 1867 †)
Hemizyga illineata (FOSSIL) Knight, 1930 †
Plocezyga indica (FOSSIL) Reed, 1944 †
Hemizyga inflata (FOSSIL) Knight, 1930 †
Microptychis insolita (FOSSIL) B.S. Kues, 2002 †
Plocezyga intermedia (FOSSIL) Hoare & Sturgeon, 1980 †
Eoptychia intermittens (FOSSIL) Hoare, 1961 †