Corynexochida
Ciliscutellum ciliensis
Order Corynexochida / Suborder Illaenina / Superfamily Illaenoidea / Family Scutelluidae
Silurian, Llandovery, RhuddanianHunan





Classification
Order Corynexochida / Suborder Illaenina / Superfamily Illaenoidea / Family Scutelluidae
Genus
Ciliscutellum Lin, 1987
Genus author
Lin Tianrui
Genus etymology
cili, type speciestype locality;Scutellum, trilobitegenus name, Scutellum
Species
C. ciliensis Lin, 1987
Species author
Lin Tianrui
Species etymology
cili, type specimenstype locality
Age
Silurian, Llandovery, Rhuddanian
Distribution
Hunan
Diagnosis
Dorsal shield elongate-elliptical, ornamented with terrace lines. Cephalon semicircular apart from the genal spines, moderately convex; cranidium nearly square; glabella mushroom-shaped, constricted in the middle and posterior part, strongly Expanded, reaching near the anterior margin, with three pairs of faintly visible impressions, with a longitudinal ridge medially; Occipital furrow broad and shallow; Occipital ring prominent; Dorsal furrows slightly deeper posteriorly, gradually shallowing forward; Palpebral lobe relatively large, expanded anteriorly. Eye situated slightly behind the middle of the cephalon; eye ridge distinct, its inner end directed obliquely to the sides of the anterior pair of glabellar furrows; fixed cheek gently convex, preocular wing subrectangular, posterior limb triangular; free cheek subtriangular, lateral border broad and flat, with slender long genal spines. Thorax of 10 segments, axis gently convex and gradually narrowing backward, narrower than the pleurae; pleurae low and flat, without pleural furrows, pleural spines projecting backward from the outer ends. Pygidium larger and more convex than the cephalon, semicircular; axis short and triangular; pleurae with six pairs of shallow pleural furrows; border low, flat and indistinct.
Remarks
This species is the type species of Ciliscutellum.