Trapezotheca aemulus (FOSSIL) (Holm, 1893 †)
Trapezotheca bicostata (FOSSIL) Rozanov & al., 1969 †
Probactrotheca briketa (FOSSIL) Valent & al., 2012 †
Lenatheca dolosa (FOSSIL) A.V. Sysoev, 1972 †
Bactrotheca emmonsi (FOSSIL) (J. Ford, 1873 †)
Lenatheca groenlandica (FOSSIL) (C.M. Poulsen, 1932 †)
Lenatheca incognita (FOSSIL) Meshkova, 1974 †
Petasotheca minuta (FOSSIL) Landing & Bartowski,1996 †
Lenatheca pyramidata (FOSSIL) (A.V. Sysoev, 1968 †)
Quadrotheca shipaiensis (FOSSIL) Z.X. Qian & al., 1979 †
Bactrotheca teres (FOSSIL) (Barrande, 1867 †)
Lenatheca triconcava (FOSSIL) (A.V. Sysoev, 1968 †)