We don't have synonyms for acanthodean yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are acanthodian and acanthodes.
(n) :
Alternative form of acanthodian. [(zoology) A member of a group of extinct fish (Acanthodii) that existed from the Silurian to the Permian period.]
(adj) :
Alternative form of acanthodian. [Pertaining to Acanthodii.]
(n) :
Alternative form of acanthodian. [(zoology) A member of a group of extinct fish (Acanthodii) that existed from the Silurian to the Permian period.]
(adj) :
Alternative form of acanthodian. [Pertaining to Acanthodii.]