Corynexochida

Kootenia yui

Order Corynexochida / Suborder Corynexochina / Family Dorypygidae

Cambrian, Series 2, Stage 3Hubei, Henan, Shaanxi

Kootenia yui — photo 1 — Photo 1 · Holotype NIGP 38182 (Hubei; Zhang Wentang et al. Cephalon and pygidium, NIGP 38189&38190 (Hubei; Zhang Wentang 1980) et al. 1980) Nearly complete dorsal shield, NIGP 38191 (Hubei; Zhang Wentang et al. 1980)

Kootenia yui — photo 2 — Photo 2 · Holotype NIGP 38182 (Hubei; Zhang Wentang et al. Cephalon and pygidium, NIGP 38189&38190 (Hubei; Zhang Wentang 1980) et al. 1980) Nearly complete dorsal shield, NIGP 38191 (Hubei; Zhang Wentang et al. 1980)

Kootenia yui — photo 3 — Photo 3 · Holotype NIGP 38182 (Hubei; Zhang Wentang et al. Cephalon and pygidium, NIGP 38189&38190 (Hubei; Zhang Wentang 1980) et al. 1980) Nearly complete dorsal shield, NIGP 38191 (Hubei; Zhang Wentang et al. 1980)

Classification

Order Corynexochida / Suborder Corynexochina / Family Dorypygidae

Genus

Kootenia Walcott, 1889

Genus author

Walcott C. D.

Genus etymology

Unknown

Species

K. yui Chang in Xiang, 1963

Species author

Zhang Wentang

Species etymology

Unknown

Age

Cambrian, Series 2, Stage 3

Distribution

Hubei, Henan, Shaanxi

Diagnosis

Dorsal shield elongate-elliptical. Cephalon semicircular; cranidium sub-trapezoidal; glabella convex, cylindrical, three pairs of glabellar furrows; posterior margin of occipital ring with a small occipital spine or node; palpebral area of fixed cheek broad; free Cheek narrow. Thorax of 7 segments; Axis and pleural lobes subequal in width; Pleural furrow broad and deep, pleural spines short and small. Pygidium semicircular or semicircular-oval; Pygidial axis of four rings plus a long terminal segment, close to the border; Border furrow narrow; Border narrow and convex, with 4 for short and small pygidial spines.