Ctenaspidae
Appearance
Ctenaspidae | |
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Family: | Ctenaspidae
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See text |
Ctenaspidae is a family of extinct cyathaspidiform heterostracan agnathans in the suborder Cyathaspidida.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/45/Ctenaspis_NT_small.jpg/220px-Ctenaspis_NT_small.jpg)
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." [1]
References
- ^ Lundgren, Mette, and Henning Blom. "Phylogenetic relationships of the cyathaspidids (Heterostraci)." GFF 135.1 (2013): 74-84.