Gyracanthidae

Extinct family of acanthodian

Gyracanthidae is a family of extinct fish belonging to the class Acanthodii, known from early Devonian to late Carboniferous. Members are characterized by large, broad-based, paired fin spines with the pectoral fin spines having a distinct longitudinal curvature. Although it was originally classified in order Climatiiformes, later research questioned this.

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