Corynexochida

Chiawangella hunanensis

Order Corynexochida / Suborder Leiostegiina / Superfamily Leiostegioidea / Family Leiostegiidae

Guzhangian (Miaolingian, Cambrian)Hunan

Chiawangella hunanensis — photo 1 — Photo 1 · Type specimen (Hunan; Peng et al., 2004) Pygidium specimen (Hunan; Peng 2020) Restoration (Peng et al., 2004) Cephalon and pygidium specimen (Hunan; Peng 2020)

Chiawangella hunanensis — photo 2 — Photo 2 · Type specimen (Hunan; Peng et al., 2004) Pygidium specimen (Hunan; Peng 2020) Restoration (Peng et al., 2004) Cephalon and pygidium specimen (Hunan; Peng 2020)

Chiawangella hunanensis — photo 3 — Photo 3 · Type specimen (Hunan; Peng et al., 2004) Pygidium specimen (Hunan; Peng 2020) Restoration (Peng et al., 2004) Cephalon and pygidium specimen (Hunan; Peng 2020)

Chiawangella hunanensis — photo 4 — Photo 4 · Type specimen (Hunan; Peng et al., 2004) Pygidium specimen (Hunan; Peng 2020) Restoration (Peng et al., 2004) Cephalon and pygidium specimen (Hunan; Peng 2020)

Classification

Order Corynexochida / Suborder Leiostegiina / Superfamily Leiostegioidea / Family Leiostegiidae

Genus

Chiawangella Chu, 1959

Genus author

Zhu Zhaoling

Genus etymology

Chiawang, the type locality in the Jiawang coalfield of Jiangsu; -ella, a diminutive adjectival suffix

Species

C. hunanensis Peng, Babcock & Lin, 2004

Species author

Peng Shanchi, Babcock L. E., Lin Huanling

Species etymology

Hunan, Hunan Province, type locality of the type specimens

Age

Guzhangian (Miaolingian, Cambrian)

Distribution

Hunan

Diagnosis

Cranidium ornamented with fine dense tubercles, bearing two pairs of intergenal spines; glabella trapezoidal, sloping downward anteriorly, with three pairs of faint glabellar furrows; anterior border narrow; preglabellar field absent; occipital furrow deep; occipital ring of uniform width with a faint median node; palpebral lobes short; eye ridges short; fixigenae narrow in the palpebral area, subtriangular behind the eyes; posterior border furrow narrow. Pygidium irregularly hexagonal apart from spines; axis large, densely tuberculate, inverted-conical with rounded, strongly convex posterior end, divided into four axial rings and a terminal lobe; pleural region narrow; two pairs of pygidial spines, the first pair long and strong, arising from the pleural region, the posterior pair slender, being marginal spines.