|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Pteraspidomorpha - Ariaspididae
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.
|D. K. Elliott and S. Swift 2010||An Ariaspis with a maximum length of 21.5 mm and a length/width ratio of 0.71-0.76. Ridges are sharp-crested and coarse (3.5-4 per mm). Posterior median projection not scale-like.|