Asijatheca probata (FOSSIL) Missarzhevsky & Mambetov,1981 †
Costatheca clinisepta (FOSSIL) (A.V. Sysoev, 1960 †)
Holmitheca obvia (FOSSIL) A.V. Sysoev, 1968 †
Holmitheca ulterior (FOSSIL) A.V. Sysoev, 1968 †
Holmitheca zhuravlevae (FOSSIL) A.V. Sysoev, 1968 †
Tetratheca composita (FOSSIL) Meshkova, 1974 †
Tetratheca pentagona (FOSSIL) A.V. Sysoev, 1968 †