Stauraspis = Cross-shield; σταυρός, ἀσπίς.
Echinaspis = Urchin with shields; ἐχῖνος, ἀσπίς.
Zonaspis = Shell with a girdle of shield; ζώνη, ἀσπίς.
Dodecaspis = Shell with twelve shields; δώδεκα, ἀσπίς.
Tessaraspis = Shield with four pores; τέσσαρα, ἀσπίς.