Ptychopariida

Akoldinioidia shanjiangensis

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Shumardiidae

Stage 10 (Furongian, Cambrian)Hunan

Akoldinioidia shanjiangensis — photo 1 — Photo 1 · Huanling Left is the holotype NIGP132974 (Hunan; Peng 2020) (Hunan; Peng 2020)

Akoldinioidia shanjiangensis — photo 2 — Photo 2 · Huanling Left is the holotype NIGP132974 (Hunan; Peng 2020) (Hunan; Peng 2020)

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 Peng, Babcock & Lin, 2004

Species author

Peng Shanchi, Babcock L. E., Lin

Species etymology

Shanjiang, a locality, Shanjiang, Fenghuang, Hunan

Age

Stage 10 (Furongian, Cambrian)

Distribution

Hunan

Diagnosis

Dorsal shield smooth. Librigenae with short genal spines. Thorax of 5 segments, segments 3 and 4 macropleural. Pygidium subrectangular; axis conical with 3 axial rings and a terminal piece; lateral and posterior borders narrow, sloping down as steep faces.