Ptychopariida

Hewenia typica

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Eulomidae

Jiangshanian (Furongian, Cambrian)Guangxi

Hewenia typica — photo 1 — Photo 1 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 2 — Photo 2 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 3 — Photo 3 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 4 — Photo 4 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 5 — Photo 5 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 6 — Photo 6 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 7 — Photo 7 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 8 — Photo 8 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 9 — Photo 9 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 10 — Photo 10 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Hewenia typica — photo 11 — Photo 11 · Type specimen figures (Guangxi; Zhou Restoration (illustrated by Zong Ruiwen; Zeng Literature specimen (Guangxi; Zhu Tianmei et al. 1977) Guangchun et al. 2018) Xuejian 2005) Complete Complete dorsal exoskeleton Complete dorsal exoskeleton dorsal (Guangxi; Qianli Zhijiang) (Guangxi; Pengcheng Jianke) exoskeleton (Guangxi; Guodong) Complete Complete dorsal dorsal exoskeleton exoskeleton (Guangxi; (Guangxi; Baishui) Xuanling)

Classification

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Eulomidae

Genus

Hewenia Zhou, 1977

Genus author

Zhou Tianmei

Genus etymology

Hewen, Hewen Village, Jingxi, Guangxi, type locality of the type species

Species

H. typica Zhou, 1977

Species author

Zhou Tianmei

Species etymology

typica, Latin, typical

Age

Jiangshanian (Furongian, Cambrian)

Distribution

Guangxi

Diagnosis

Opisthoparian micropygous trilobite with ovate, smooth dorsal shield. Cephalon relatively wide and flat; glabella moderately convex, truncate-conical; dorsal furrows deep; three pairs of glabellar furrows, S1 long and inclined inward, S2 shorter, S3 faint; anterior border wider medially, narrowing laterally; preglabellar field rather wide; occipital furrow distinct, curved forward at both ends; occipital ring slightly arched forward medially; palpebral lobes crescent-shaped, rather large, nearly parallel to the lateral margins of the glabella; fixigenae slightly narrow; librigenae wide with medium-length genal spines. Thorax of 12 segments, axis tapering backward; pleurae slightly wider than the axis, pleural furrows wide and deep, pleural spines short and small. Pygidium elliptical to semicircular; axis divided into two rings and a rather rounded terminal piece, border narrow.

Remarks

This species is the type species of the genus Hewenia.