Coronocephalus rex

Order Phacopida / Suborder Cheirurina / Superfamily Cheiruroidea / Family Encrinuridae / Subfamily Coronocephalinae

coron (Latin, crown) + cephal- (Greek, head), referring to the crown-like border of the librigenae

rex, Latin, king

Glabella strongly constricted posteriorly, with 3 pairs of glabellar furrows, S1 and S2 crossing the glabella; librigenae nodose, border with 9 isolated tooth-like spines. Thorax with 11 segments. Pygidium triangular, axis with more than 36 rings; pygidial pleural segments 13-14, pleural ends pointed and convex but not spinose. Grabau named the subgenus and Coronocephalus rex in 1924 based on specimens from Yangxin, Hubei, but the

specimens were lost; in 1938 Wang Yu designated a specimen from Longtan, Nanjing, Jiangsu, matching Grabau's diagnostic characters, as the neotype. This species is the type species of the genus Coronocephalus. from Longtan, Nanjing, Jiangsu, matching Grabau's diagnostic characters, as the neotype. This species is the type species of the genus Coronocephalus.