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Genus: Bactrotheca Novak , 1891 † (DB: 2 SP)
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Bactrotheca emmonsi
(J. Ford, 1873 †) (FOSSIL)
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Bactrotheca teres
(Barrande, 1867 †) (FOSSIL)
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Genus: Lenatheca Rozanov & al., 1969 † (DB: 5 SP)
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Lenatheca dolosa
A.V. Sysoev, 1972 † (FOSSIL)
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Lenatheca groenlandica
(C.M. Poulsen, 1932 †) (FOSSIL)
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Lenatheca incognita
Meshkova, 1974 † (FOSSIL)
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Lenatheca pyramidata
(A.V. Sysoev, 1968 †) (FOSSIL)
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Lenatheca triconcava
(A.V. Sysoev, 1968 †) (FOSSIL)
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Genus: Petasotheca Landing & Bartowski, 1996 † (DB: 1 SP)
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Petasotheca minuta
Landing & Bartowski, 1996 † (FOSSIL)
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Genus: Probactrotheca Valent & al., 2012 † (DB: 1 SP)
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Probactrotheca briketa
Valent & al., 2012 † (FOSSIL)
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Genus: Quadrotheca Sysoev , 1958 † (DB: 1 SP)
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Quadrotheca shipaiensis
Z.X. Qian & al., 1979 † (FOSSIL)
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Genus: Trapezotheca Syssoiev , 1958 † (DB: 2 SP)
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Trapezotheca aemulus
(Holm, 1893 †) (FOSSIL)
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Trapezotheca bicostata
Rozanov & al., 1969 † (FOSSIL)
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