Arthricocephalus chauveaui

Order Corynexochida / Suborder Corynexochina / Family Oryctocephalidae / Family Oryctocarinae

arthr-, joint; -cephalus, head

Chauveau — named for M. Chauveau, who collected the specimens

Arthricocephalus(Arthricocephalites)jishouensis; Arthricocephalus taijiangensis; Arthricocephalus Arthricocephalus(Arthricocephalites)pulchellus; Haliplanktos jishouensis Arthricocephalites taijiangensis; Arthricocephalus pulchellus

Isopygous trilobite; Dorsal shield elongate-oval, about twice as long as wide; Surface usually with pustules. Glabella subcylindrical, anterior end expanded laterally; Four pairs of glabellar furrows, S1-S3 crossing Glabellar furrows connected to the dorsal furrow, pit-like laterally, S4 pit-like and connected to the dorsal furrow; Palpebral lobe long, curved at 40 degrees; Eye ridge short, extending upward to the tip of S4; Anterior branch of facial suture Short; Posterior branch of facial suture narrow and long; Fixed cheek broad; Free cheek narrow, without genal spine. Adult stage with 8 thoracic segments of uniform width; With deep and broad pleural furrows, distal end of pleural segment pointed. Pygidium roundly triangular, About twice as wide as long; Pygidial axis conical, distal end far from the pygidial border, axis about half the pygidial length, divided into five rings; Pleural region convex, with five pairs of pygidial pleural segments; Pleural furrow deep and narrow; with a narrow border.

This species is the type species of Arthricocephalus.