Lampraspis carmani (Denison, 1960)

1960 Pteraspis carmani Denison: 568, figs 124 — 141.

1984 Zascinaspis carmani (Denison) Blieck: 61.

Diagnosis. As for ‘ Pteraspis’ carmani in Denison (1960).

Remarks. Phylogenetic analyses placed Zascinaspis heintzi and Z. carmani at different places in the tree (Figs 4 — 6), indicating they do not belong within the same genus. Blieck (1984) assigned ‘ P.’ carmani to Zascinaspis due to similarities in the proportions of the rostral and dorsal plates and the orbito-pineal belt, as well as shared oral region arrangement. In our analysis, ‘ Z.’ carmani falls within the Protaspididae as sister taxon to Lampraspis (both recovered from western USA localities). Lampraspis carmani also shares with protaspids an ornamentation of undulating ridges and a branchial opening placed towards the posterior end of the dorsal plate, with reduced cornual plates.