Cyathaspididae

{{Short description|Extinct family of jawless fishes}}

{{Automatic taxobox

| image = Cyathaspis banksii.jpg

| image_caption = Reconstruction of Cyathaspis banksii

| taxon = Cyathaspididae

| authority = Romer, 1945

| type_genus = †Cyathaspis

| type_genus_authority = Lankester

| subdivision_ranks = Subfamilies

| subdivision =

• Ctenaspinae
• Cyathaspidinae
• Poraspinae

| synonyms = Cyathaspidei Kiaer

}}

Cyathaspididae is an extinct family in the heterostracan order Cyathaspidiformes.The Classification and Evolution of the Heterostraci. L. Beverly Tarlo, Acta Palaeontologica Polonica, 1962{{Cite journal | last1 = Elliott | first1 = D. K. | doi = 10.1080/02724634.2012.717568 | title = A new cyathaspid (Agnatha, Heterostraci) with an articulated oral cover from the Late Silurian of the Canadian Arctic | journal = Journal of Vertebrate Paleontology | volume = 33 | pages = 29–34 | year = 2013 }}File:Veronaspis sp. (jawless fish) bonebed.jpg mass mortality. Late Silurian, Cape Storm Formation, Cornwallis Island, Nunavut (Canada). ]]

Cyathaspididae contains most of the genera originally contained within Cyathaspididae, as well as those genera contained within Irregularaspididae, and Poraspididae. In addition to the type genus, †Cyathaspis, Cyathaspididae contains the following genera: †Americaspis, †Archegonaspis, †Capitaspis, †Dikenaspis, †Dinaspidella, †Homaspidella, †Irregulareaspis, †Nahanniaspis, †Pionaspis, †Poraspis, †Ptomaspis, †Seretaspis, †Steinaspis, †Torpedaspis and †Vernonaspis.

File:Pionaspis amplissima (jawless fish) cast.jpg cast. Early Devonian, Mackenzie Mountains, Northwest Territories (Canada).]]