Achanarella is a genus of extinct jawless fish from the Achanarras Quarry in Scotland, of which the name is derived, dating to the Middle Devonian.

[3] Achanarella trewini was finally described as a new genus and species in 2002 by Michael J. Newman based on new and better preserved fossils.

This was further supported due to the fact that its branchial openings were small and uniform in size compared to the larger, more irregular holes found in decayed fish.

[1] Achanarella is able to be placed under Chordata with reasonable confidence due to its apparent bilateral symmetry and paired gill openings.

[1] The presence of an unidentifiable tube, leading from the branchial openings to the head, may suggest a piston cartilage as in Mayomyzon.