Palaeolenus lantenoisi

Order Redlichiida / Suborder Redlichiina / Superfamily Ellipsocephaloidea / Family Palaeolenidae

palae, Greek, ancient; Olenus, a trilobite genus name

Lantenois, a surname

Palaeolenus kunmingensis; P. tingi; P. minor; P. planilimbatus Megapalaeolenus nanzhengensis; M. quadratus; P. yangziensis; P. liantuoensis; M. xixiangensis; M. obsoletus; M. yichangensis

Body relatively small, generally about 1 cm long, dorsal shield elongate-oval. Cephalon semicircular; Cranidium subsquare, wider than long; Glabella rectangular, flat-convex, sides subparallel, with four pairs of glabellar furrows, the first pair short and shallow; occipital furrow straight, occipital ring widest medially; fixed cheek relatively broad; eye ridge rather long, palpebral lobe rather small; inner border wide, outer border narrow. Anterior facial suture branches curving slightly forward and outward Obliquely outward, posterior branch short; Free cheek relatively narrow, genal spines short and small, slightly obliquely backward and outward. Thorax of 13 segments, axis slightly narrower than pleural lobes, axis smooth or with small nodes, pleural spines short. Pygidium small, divided into two segments, the anterior one narrow.