These Trilobites are known to be from the Devonian of Morocco. The Paralejurus has a convex and nearly semicircular head shield. Subdued dorsal furrows mean the the glabella and the glabellar forrows may be faint or obscure. There are no genal spines, and the eyes are positioned at the rear. In the ten segments of the thorax, the axis is not clearly differentiated from the pleurae. The large and fanlike tail shield has a relatively short axis. This was an inhabitant of warm shelf seas. Found in limestone they accumulated in shallow-water conditions.
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