Ptychopariida

Akoldinioidia hewenensis

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Shumardiidae

Jiangshanian (Furongian, Cambrian)Guangxi

Akoldinioidia hewenensis — photo 1 — Photo 1 · Holotype WCGS IV70055 Restoration (Zeng Guangchun (Guangxi; Peng 2020) (Guangxi; Weidingzhong (Guangxi; Lixia) et al. 2018) Guchong) (Guangxi; Zhu Xuejian 2005)

Akoldinioidia hewenensis — photo 2 — Photo 2 · Holotype WCGS IV70055 Restoration (Zeng Guangchun (Guangxi; Peng 2020) (Guangxi; Weidingzhong (Guangxi; Lixia) et al. 2018) Guchong) (Guangxi; Zhu Xuejian 2005)

Akoldinioidia hewenensis — photo 3 — Photo 3 · Holotype WCGS IV70055 Restoration (Zeng Guangchun (Guangxi; Peng 2020) (Guangxi; Weidingzhong (Guangxi; Lixia) et al. 2018) Guchong) (Guangxi; Zhu Xuejian 2005)

Akoldinioidia hewenensis — photo 4 — Photo 4 · Holotype WCGS IV70055 Restoration (Zeng Guangchun (Guangxi; Peng 2020) (Guangxi; Weidingzhong (Guangxi; Lixia) et al. 2018) Guchong) (Guangxi; Zhu Xuejian 2005)

Akoldinioidia hewenensis — photo 5 — Photo 5 · Holotype WCGS IV70055 Restoration (Zeng Guangchun (Guangxi; Peng 2020) (Guangxi; Weidingzhong (Guangxi; Lixia) et al. 2018) Guchong) (Guangxi; Zhu Xuejian 2005)

Classification

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Shumardiidae

Genus

Akoldinioidia Zhou & Zhang, 1984

Genus author

Zhou Zhiyi & Zhang Jinlin

Genus etymology

a-, against, not, away from, without; Koldinioidia, a trilobite genus name

Species

A. shanjiangensis (Zhou in Zhou et al., 1977)

Species author

Zhou Tianmei

Species etymology

Hewen, Hewen Village, Jingxi, Guangxi

Age

Jiangshanian (Furongian, Cambrian)

Distribution

Guangxi

Synonyms

Shumardia ? hewenensis

Diagnosis

Dorsal shield elongate-elliptical apart from the macropleural segments. Cephalon semicircular; glabella with parallel sides and pointed-rounded front, anterior lateral lobes faint, with two pairs of short faint glabellar furrows; dorsal furrows wide and deep; occipital ring wide; posterior border furrow wide and straight. Thorax of 8 segments, segment 4 macropleural with long backward-extending spines; axis slightly wider than pleurae; pleural furrows straight. Pygidium semi-elliptical; axis divided into 4 rings plus a terminal piece; pleural and interpleural furrows distinct; border narrow.