Ladatheca annae (FOSSIL) (A.V. Sysoev, 1959 †)
Spinulitheca billingsi (FOSSIL) (A.V. Sysoev, 1962 †)
Malykanotheca cuspidata (FOSSIL) Meshkova, 1974 †
Spinulitheca secunda (FOSSIL) (A.V. Sysoev, 1968 †)
Aldanotheca sulcata (FOSSIL) Meshkova, 1974 †