Biceratops

Biceratops is an extinct genus of olenelloid redlichiid trilobites, of average size, with the largest specimen 8 centimetres or 3.1 inches long, not including the huge pleural spines of the 3rd segment of the thorax.

Biceratops can easily be distinguished from other members of Biceratopsidae by the absence of genal spines, in combination with effaced features of the raised axial area of the head shield (or glabella), that is bordering the two horn-like projections that carry the eyes.

Like all other members of the Olenelloidea superfamily, the eye-ridges spring from the back of the frontal lobe (L4) of the central area of the cephalon, that is called glabella.

The exoskeleton of Biceratops is ovate in outline and up to 8 cm in length, disregarding the huge pleural spines of the 3rd thorax segment.

Biceratops nevadensis is known only from the lower part of the Pioche Shale (Upper Olenellus-zone) at the base of the Frenchman Mountain, Clark County, Nevada.