''Tetanopsyrus'' is a genus of

Acanthodii Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes), typically considered a paraphyletic group. They are currently considered to represent a grade of various fish lineages leading up to the extant Chondrichthyes, whi ...

. There are two species of this genus that lived through the lower Devonian (

Lochkovian The Lochkovian is one of three faunal stages in the Early Devonian Epoch. It lasted from 419.2 ± 3.2 million years ago to 410.8 ± 2.8 million years ago. It marked the beginning of the Devonian Period, and was followed by the Pragian Stage. It is ...

), some 416 to 359 million years ago.

''Tetanopsyrus lindoei''

Authority: Gagnier, Hanke and Wilson, 1999 Size: Length: 4 cm Remains: Holotype (UALVP 39078): articulated skeleton. Referred Materials: UALVP 32571, 38682, and 43026. Age and Distribution: Horizon: lower Devonian (Lochkovian). Locality: MOTH locality outcrop in the Mackenzie Mountains, western Northwest Territories, Canada. Classification: Acanthodii Diplacanthiiformes Tetanopsyridae

''Tetanopsyrus breviacanthias''

Authority: Hanke, Davis and Wilson, 2001 Size: Length: 4 cm Remains: (UALVP 43246): articulated skeleton Referred Materials: UALVP 39062 (partial); UALVP 42512; UALVP 43089 (juvenile); UALVP 44030 (juvenile); UALVP 45153 Age and Distribution: Horizon: lower Devonian (Lochkovian) Locality: MOTH locality outcrop in the Mackenzie Mountains, western Northwest Territories, Canada. Classification: Acanthodii Diplacanthiiformes Tetanopsyridae

References

Acanthodii genera Fossils of British Columbia {{Acanthodii-stub