Asaphida

Jiuxiella laevigata

Order Asaphida / Superfamily Trinucleoidea / Family Raphiophoridae

Darriwilian (Middle Ordovician)Hunan

Jiuxiella laevigata — photo 1 — Photo 1 · Holotype IV13053 (Hunan; Zhou Tianmei (Hunan; Chi Liulian De 1977) Mao) Paratypes (Hunan; Zhou Tianmei 1977) (Hunan; Zhou et al., 2001) (Hunan; Yuan Wenwei et al. 2020)

Jiuxiella laevigata — photo 2 — Photo 2 · Holotype IV13053 (Hunan; Zhou Tianmei (Hunan; Chi Liulian De 1977) Mao) Paratypes (Hunan; Zhou Tianmei 1977) (Hunan; Zhou et al., 2001) (Hunan; Yuan Wenwei et al. 2020)

Jiuxiella laevigata — photo 3 — Photo 3 · Holotype IV13053 (Hunan; Zhou Tianmei (Hunan; Chi Liulian De 1977) Mao) Paratypes (Hunan; Zhou Tianmei 1977) (Hunan; Zhou et al., 2001) (Hunan; Yuan Wenwei et al. 2020)

Jiuxiella laevigata — photo 4 — Photo 4 · Holotype IV13053 (Hunan; Zhou Tianmei (Hunan; Chi Liulian De 1977) Mao) Paratypes (Hunan; Zhou Tianmei 1977) (Hunan; Zhou et al., 2001) (Hunan; Yuan Wenwei et al. 2020)

Jiuxiella laevigata — photo 5 — Photo 5 · Holotype IV13053 (Hunan; Zhou Tianmei (Hunan; Chi Liulian De 1977) Mao) Paratypes (Hunan; Zhou Tianmei 1977) (Hunan; Zhou et al., 2001) (Hunan; Yuan Wenwei et al. 2020)

Jiuxiella laevigata — photo 6 — Photo 6 · Holotype IV13053 (Hunan; Zhou Tianmei (Hunan; Chi Liulian De 1977) Mao) Paratypes (Hunan; Zhou Tianmei 1977) (Hunan; Zhou et al., 2001) (Hunan; Yuan Wenwei et al. 2020)

Classification

Order Asaphida / Superfamily Trinucleoidea / Family Raphiophoridae

Genus

Jiuxiella Liu in Zhou et al., 1977

Genus author

Liu Yiren

Genus etymology

Jiuxi, Jiuxi, Taoyuan, Hunan, type locality of the type species

Species

J. laevigata Liu in Zhou et al., 1977

Species author

Liu Yiren

Species etymology

laevigata, Latin, smooth

Age

Darriwilian (Middle Ordovician)

Distribution

Hunan

Synonyms

Pytine laevigata

Diagnosis

Dorsal shield subcircular. Cranidium semi-elliptical; glabella club-shaped with a small median node; glabellar lateral lobes small; small eye tubercles and eye ridges present; fixigenae wide; librigenae narrow and slender; posterior border furrow deep. Thorax of 6 segments; axis narrow; pleural region wide with wide flat pleural furrows. Pygidium wide, semi-elliptical; axis sharp-conical, reaching the border; pleural region with one pleural furrow; border wide.

Remarks

This species is the type species of the genus Jiuxiella.