|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Pteraspidomorpha - Cyathaspidiformes - Cyathaspididae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|R. H. Denison 1963||The length of the dorsal shield is 57 mm. in the type. The dentine ridges are 5 to 6 per millimeter. The dorsal shield has a rounded median lobe on its posterior edge, and sharply marked post- branchial processes.|