Cyathaspididae

Cyathaspididae
File:Cyathaspis banksii.jpg
Reconstruction of Cyathaspis banksii
Scientific classification Edit this classification
Kingdom:	Animalia
Phylum:	Chordata
Infraphylum:	Agnatha
Class:	†Pteraspidomorpha
Subclass:	†Heterostraci
Order:	†Cyathaspidiformes
Clade:	†Cyathaspidida
Family:	†Cyathaspididae Romer, 1945
Type genus
†Cyathaspis Lankester
Subfamilies
Ctenaspinae Cyathaspidinae Poraspinae
Synonyms
Cyathaspidei Kiaer

Cyathaspididae is an extinct family in the heterostracan order Cyathaspidiformes.

File:Veronaspis sp. (jawless fish) bonebed.jpg

Vernonaspis sp. 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

Pionaspis amplissima cast. Early Devonian, Mackenzie Mountains, Northwest Territories (Canada).

External links

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