Ptychopariida

Eosoptychoparia guizhouensis

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Ptychopariidae

Stage 4 (Cambrian Series 2) to Wuliuan (Miaolingian)Guizhou, Hunan
Eosoptychoparia guizhouensis — photo 1
Photo 1 · Type specimen figures (Guizhou; Zhang Dorsal and ventral restorations (Guizhou; Chen Wentang et al. 1980) Shengguang et al. 2022) Three different moulting styles (Somersault, Harrington and Henningsmoen modes; Chen Shengguang et al. 2022) Literature specimen (Hunan; Lei Qianping 2016)
Eosoptychoparia guizhouensis — photo 2
Photo 2 · Type specimen figures (Guizhou; Zhang Dorsal and ventral restorations (Guizhou; Chen Wentang et al. 1980) Shengguang et al. 2022) Three different moulting styles (Somersault, Harrington and Henningsmoen modes; Chen Shengguang et al. 2022) Literature specimen (Hunan; Lei Qianping 2016)
Eosoptychoparia guizhouensis — photo 3
Photo 3 · Type specimen figures (Guizhou; Zhang Dorsal and ventral restorations (Guizhou; Chen Wentang et al. 1980) Shengguang et al. 2022) Three different moulting styles (Somersault, Harrington and Henningsmoen modes; Chen Shengguang et al. 2022) Literature specimen (Hunan; Lei Qianping 2016)
Eosoptychoparia guizhouensis — photo 4
Photo 4 · Type specimen figures (Guizhou; Zhang Dorsal and ventral restorations (Guizhou; Chen Wentang et al. 1980) Shengguang et al. 2022) Three different moulting styles (Somersault, Harrington and Henningsmoen modes; Chen Shengguang et al. 2022) Literature specimen (Hunan; Lei Qianping 2016)
Classification
Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Ptychopariidae
Genus
Eosoptychoparia Chang, 1963
Genus author
Zhang Wentang
Genus etymology
eos, Greek, dawn/east; Ptychoparia, a trilobite genus name
Species
E. guizhouensis Yuan in Zhang et al., 1980
Species author
Yuan Jinliang
Species etymology
Guizhou, Guizhou Province, type locality of the type specimens
Age
Stage 4 (Cambrian Series 2) to Wuliuan (Miaolingian)
Distribution
Guizhou, Hunan
Synonyms
Eosoptychoparia conica; E. intermedia; Pachyaspis (Danzhaina) lilia; Eosoptychoparia (Danzhaina) lilia; E. (Danzhaina) guizhouensis; E. (Danzhaina) conica; E. (Danzhaina) intermedia; E. (Danzhaina) typica E. (Danzhaina) mesembrina
Diagnosis
Cranidium wide, trapezoidal. Glabella conical with three pairs of glabellar furrows, S1 inclined downward; occipital furrow deep, narrowing laterally, usually with an occipital spine; palpebral lobes medium-sized; eye ridges long; preglabellar field long. Fixigenae wide; librigenae medium-wide with medium-length genal spines. Thorax of 13 segments; axis narrower than pleurae; pleural furrows deep, pleural spines short. Pygidium small, subelliptical.