Apatokephalus latilimbatus

Order Asaphida / Superfamily Remopleuridioidea / Family Remopleurididae

apat-, Greek, illusion; -kephalus = -cephalus, Greek, head

lati, Latin, wide; limbatus, Latin, bordered

Axis densely covered with fine nodes; anterior border and cephalic and pygidial doublures with concentric terrace lines. Cephalon subpentagonal with rounded anterior margin, doublure with a ventral median suture; glabella bell-shaped with a long anterior lobe, three pairs of glabellar furrows, S1 deepest, an elongate-elliptical pit extending obliquely inward-backward, S2 nearly parallel to S1, S3 short and shallow; preglabellar field narrow; occipital ring of uniform width; anterior border subtriangular; palpebral lobes large, crescentic; gonatoparian facial sutures; librigenae narrow; border wide; genal spines stout and extremely long. Thorax of 12 segments; axis slightly wider than pleurae, segment 8 with an extremely long axial spine; pleural furrows wide, pleural ends pointed. Pygidium small, sub-elliptical; axis short and stout, of 2 rings plus a terminal piece; 4 pairs of lateral spines arising from the pleural region.