Cyathaspidiformes

Cyathaspidiformes; Temporal range: Silurian-Devonian
	Reconstruction of Cyathaspis banksii
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Infraphylum:	Agnatha
Class:	†Pteraspidomorpha
Subclass:	†Heterostraci
Order:	†Cyathaspidiformes
Suborders, superfamilies and families
	Cyathaspidida Ariaspidae; Ctenaspididae; Cyathaspidae; ; Amphiaspidida? Amphiaspidoidei Amphiaspididae; Edaphaspididae; Gabreyaspididae; Olbiaspididae; ; Hibernaspidoidei Aphataspididae; Eglonaspididae; Hibernaspididae; ; Siberiaspidoidei Siberiaspididae; Tuxeraspididae; ; ;
Synonyms
	Amphiaspidiformes Berg 1940;

Cyathaspidiformes is an extinct order of heterostracan vertebrates known from extensive fossil remains primarily from Silurian to Early Devonian strata of Europe, and North America, and from Early Devonian marine strata of Siberia.