Genus: Platyrhakis EL FEHRI, GROHGANZ, SANSOM, BENTON & KEATING, 2026
Etymology: Greek, platy, "broad" and Greek, rhakis, "spine"; in reference to the genus charastic broad and flat cornual processes.

Species: traquairi (STENSIO, 1932) EL FEHRI, GROHGANZ, SANSOM, BENTON & KEATING, 2026
= Cephalaspis traquairi STENSIO, 1932
Etymology:

Holotype: NMS G 1902.23 (NHMUK PV P 45809 plaster cast)

Locality: Tulloch Quarry, Glaston Parish, East Syshire, Scotland, Northern United Kingdom.

Horizon: Lower Old Red Sandstone.

Biostratigraphy:

Age: Lochkovian Stage, Early Early Devonian Epoch, Early Devonian.

Material: Headsheild.