Fallotaspis
Fallotaspis is a genus of redlichiid trilobite genus found in Early Cambrian-aged strata of the United States and Morocco. Etymology. The generic name, Fallotaspis, is a compound crassis word that honors Paul Fallot (1889-1960), a French paleontologist who researched Cambrian fossils in Spain, in combination with the Greek word ἀσπίς, "aspis", meaning shield. Description. As with most early trilobites, "Fallotaspis" has an almost flat exoskeleton, that is only thinly calcified, and has crescent-shaped eye ridges. As part of the Olenellina suborder, "Fallotaspis" lacks dorsal sutures. As part of the superfamily Fallotaspidoidea "Fallotaspis" can be distinguished from  Olenelloidea, Judomioidea and Nevadioidea by features of the cephalon and in particular the glabella. The glabella tapers forward. The frontal lobe of the glabella (because it is counted from the back, it is numbered L4) is as long as the most backward lobe (L0), less than in these other Olenellina subfamilies. The eye ridges (or ocular lobes) contact, but do not merge with, the entire frontal margin of the glabella. The cephalon of "Fallotaspis" is semi-circular in shape, with rounded cheeks that are continuous with long spines that go back to the first half of the thorax. Sutures absent . The thorax has up to 21 segments. The third segment terminating in a long spine that extends back to the fourteenth segment. The tail shield (or pygidium) is very small, about the same length as the two most backward thorax segments combined.