acanthodian
/ˌæk.n̩ˈθoʊ.di.n̩/noun
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A member of a group of extinct fish (Acanthodii) that existed from the Silurian to the Permian period.
adjective
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Pertaining to Acanthodii.
A member of a group of extinct fish (Acanthodii) that existed from the Silurian to the Permian period.
Pertaining to Acanthodii.