Kingdom Animalia Class Pteraspidomorphi Order Cyathaspidiformes | Phylum Chordata Subclass Heterostraci Rank Family | |
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Similar Ctenaspis, Pteraspidomorphi, Heterostraci | ||
Ctenaspidae is a family of extinct cyathaspidiform heterostracan agnathans in the suborder Cyathaspidida.
If Amphiaspidida can be ignored as a daughter-taxon, the family Ctenaspidae contains Ctenaspis and its various sister-taxa originally contained within both Ctenaspididae and Ctenaspididae, including Allocryptaspis, Alainaspis, Zaphoctenaspis, Arctictenaspis, and Boothiaspis, which was first described as a "Canadian amphiaspid."
References
Ctenaspidae Wikipedia(Text) CC BY-SA