Corynexochida

Arthricocephalus xinzhaiheensis

Order Corynexochida / Suborder Corynexochina / Family Oryctocephalidae / Family Oryctocarinae

Cambrian, Series 2, Stage 4Hunan, Guizhou

Arthricocephalus xinzhaiheensis — photo 1 — Photo 1 · Type specimen (Guizhou; Peng et al., 2017) Figured specimen (Guizhou; Peng et al., 2017) Complete dorsal shield Figured specimen (Hunan; Peng et al., 2017) (Hunan; Baishui)

Arthricocephalus xinzhaiheensis — photo 2 — Photo 2 · Type specimen (Guizhou; Peng et al., 2017) Figured specimen (Guizhou; Peng et al., 2017) Complete dorsal shield Figured specimen (Hunan; Peng et al., 2017) (Hunan; Baishui)

Arthricocephalus xinzhaiheensis — photo 3 — Photo 3 · Type specimen (Guizhou; Peng et al., 2017) Figured specimen (Guizhou; Peng et al., 2017) Complete dorsal shield Figured specimen (Hunan; Peng et al., 2017) (Hunan; Baishui)

Arthricocephalus xinzhaiheensis — photo 4 — Photo 4 · Type specimen (Guizhou; Peng et al., 2017) Figured specimen (Guizhou; Peng et al., 2017) Complete dorsal shield Figured specimen (Hunan; Peng et al., 2017) (Hunan; Baishui)

Classification

Order Corynexochida / Suborder Corynexochina / Family Oryctocephalidae / Family Oryctocarinae

Genus

Arthricocephalus Bergeron, 1899

Genus author

Bergeron J.

Genus etymology

arthr-, joint; -cephalus, head

Species

A. xinzhaiheensis Chien & Lin in Lu et al., 1974

Species author

Qian Yiyuan, Lin Huanling

Species etymology

Xinzhaihe, Songtao, Guizhou, the type locality

Age

Cambrian, Series 2, Stage 4

Distribution

Hunan, Guizhou

Synonyms

Arthricocephalus(Arthricocephalites)xinzhaiheensis; Arthricocephalus(Arthricocephalites)intermedius Arthricocephalites xinzhaiheensis

Diagnosis

Extremely similar to A. chauveaui, differing in that the glabellar furrows do not reach the dorsal furrow, being separated from it by ridge-like structures.

Remarks

Some researchers consider Arthricocephalites valid, and accordingly this species is Arthricocephalites xinzhaiheensis.