Ctenaspidae

{{Short description|Family of jawless fishes}}

{{Taxobox

| fossil_range =

| image = Ctenaspis NT small.jpg

| image_caption = Life reconstruction of Ctenaspis dentata

| regnum = Animalia

| phylum = Chordata

| classis = Pteraspidomorphi

| subclassis = Heterostraci

| ordo = Cyathaspidiformes

| unranked_subordo = Cyathaspidida

| familia = Ctenaspidae

| familia_authority =

| subdivision_ranks = Genera

| subdivision = See text

}}

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."Lundgren, Mette, and Henning Blom. "Phylogenetic relationships of the cyathaspidids (Heterostraci)." GFF 135.1 (2013): 74-84.