[3] The outline of the exoskeleton of Meteoraspis is an elongate, slightly inverted egg shaped though almost ovate, widest at the tip of the genal spines and 1.6× as long as wide.

The well-defined central raised area (or glabella) is convex, elongate tapering, with a rounded front, and has only one furrow, crossing it near the back of the cephalon, defining the occipital ring.

The fracture lines (or sutures) that in moulting separate the librigenae from the fixigenae are divergent just in front of the eyes, becoming parallel near the border furrow and slightly convergent at the margin.

[4] Philippe Janvier assigned Cephalaspis gigas, an Early Devonian osteostracan agnathan with a tremendously wide headshield, to the newly erected genus Meteoraspis in 1981.

[5][6] M. etheridgei occurs together with Eugonocare tessellatum, Corynexochus plumula, Mindycrusta oepiki, Innitagnostus inexpectans, Peratagnostus, and Pseudagnostus idalis (all trilobites), Acrothele, Orbithele, Quadrisonia, Anabolotreta tegula, Anabolotreta sp., Dactylotreta redunca, Dactylotreta sp., Linnarssonia, Neotreta, Picnotreta sp., Picnotreta debilis, Stilpnotreta magna, Treptotreta sp., Treptotreta jucunda, Dictyonina, Micromitra modesta and Micromitra sp.