Agnostida

Agnostotes tianshanicus

Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family Diplagnostidae

Cambrian, Furongian JiangshanianXinjiang; Kazakhstan

Agnostotes tianshanicus — photo 1 — Photo 1 · Holotype XTR-041 (Xinjiang; Zhang Tairong Cephalon and pygidium (Xinjiang; Peng 1981) Shanchi 2020) (Kazakhstan; Yergaliev et al., 2013) IGCAGS T1462 (Xinjiang; left: photograph of original specimen, Xiang Liwen et al. 1985; right: reconstruction of deformed specimen, Peng Shanchi 2020)

Agnostotes tianshanicus — photo 2 — Photo 2 · Holotype XTR-041 (Xinjiang; Zhang Tairong Cephalon and pygidium (Xinjiang; Peng 1981) Shanchi 2020) (Kazakhstan; Yergaliev et al., 2013) IGCAGS T1462 (Xinjiang; left: photograph of original specimen, Xiang Liwen et al. 1985; right: reconstruction of deformed specimen, Peng Shanchi 2020)

Agnostotes tianshanicus — photo 3 — Photo 3 · Holotype XTR-041 (Xinjiang; Zhang Tairong Cephalon and pygidium (Xinjiang; Peng 1981) Shanchi 2020) (Kazakhstan; Yergaliev et al., 2013) IGCAGS T1462 (Xinjiang; left: photograph of original specimen, Xiang Liwen et al. 1985; right: reconstruction of deformed specimen, Peng Shanchi 2020)

Agnostotes tianshanicus — photo 4 — Photo 4 · Holotype XTR-041 (Xinjiang; Zhang Tairong Cephalon and pygidium (Xinjiang; Peng 1981) Shanchi 2020) (Kazakhstan; Yergaliev et al., 2013) IGCAGS T1462 (Xinjiang; left: photograph of original specimen, Xiang Liwen et al. 1985; right: reconstruction of deformed specimen, Peng Shanchi 2020)

Agnostotes tianshanicus — photo 5 — Photo 5 · Holotype XTR-041 (Xinjiang; Zhang Tairong Cephalon and pygidium (Xinjiang; Peng 1981) Shanchi 2020) (Kazakhstan; Yergaliev et al., 2013) IGCAGS T1462 (Xinjiang; left: photograph of original specimen, Xiang Liwen et al. 1985; right: reconstruction of deformed specimen, Peng Shanchi 2020)

Classification

Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family Diplagnostidae

Genus

Agnostotes

Genus author

Ö pik A. A.

Genus etymology

agnost, from Agnostus (a trilobite genus name); -tes, noun suffix denoting similarity.

Species

A. tianshanicus (Zhang, 1981)

Species author

Zhang Tairong

Species etymology

Tianshan, Tianshan, Xinjiang.

Age

Cambrian, Furongian Jiangshanian

Distribution

Xinjiang; Kazakhstan

Synonyms

Xestagnostus tianshanicus

Diagnosis

Surface with radiating furrows. Glabella relatively narrow, frontal lobe suboval, anterior end rounded, F3 straight, terminal end of posterior lobe bluntly pointed, median node on the anterior part of M2; preglabellar field long, with well-developed preglabellar median furrow; Border narrow and upturned, border furrow broad and deep. Anterior axial ring of the pygidial axis short, median node long, F1 and F2 extending straight, posterior axial ring fan-shaped with two subparallel rows of fine pits inside; border and border furrow both Wide, with a pair of posterolateral spines.