Asaphida

Paracoosia langgongsiensis

Order Asaphida / Superfamily Anomocaroidea / Family Anomocaridae

Drumian (Miaolingian, Cambrian)Shandong

Paracoosia langgongsiensis — photo 1 — Photo 1 · Lin Ribai, Zhu Xuejian Cranidium NIGP147784 is the holotype (Shandong; Complete dorsal exoskeleton Yuan Jinliang et al. 2012) (Shandong; Y.W) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Guodong) (Shandong; Woniushan)

Paracoosia langgongsiensis — photo 2 — Photo 2 · Lin Ribai, Zhu Xuejian Cranidium NIGP147784 is the holotype (Shandong; Complete dorsal exoskeleton Yuan Jinliang et al. 2012) (Shandong; Y.W) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Guodong) (Shandong; Woniushan)

Paracoosia langgongsiensis — photo 3 — Photo 3 · Lin Ribai, Zhu Xuejian Cranidium NIGP147784 is the holotype (Shandong; Complete dorsal exoskeleton Yuan Jinliang et al. 2012) (Shandong; Y.W) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Guodong) (Shandong; Woniushan)

Paracoosia langgongsiensis — photo 4 — Photo 4 · Lin Ribai, Zhu Xuejian Cranidium NIGP147784 is the holotype (Shandong; Complete dorsal exoskeleton Yuan Jinliang et al. 2012) (Shandong; Y.W) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Guodong) (Shandong; Woniushan)

Paracoosia langgongsiensis — photo 5 — Photo 5 · Lin Ribai, Zhu Xuejian Cranidium NIGP147784 is the holotype (Shandong; Complete dorsal exoskeleton Yuan Jinliang et al. 2012) (Shandong; Y.W) Complete dorsal exoskeleton Complete dorsal exoskeleton (Shandong; Guodong) (Shandong; Woniushan)

Classification

Order Asaphida / Superfamily Anomocaroidea / Family Anomocaridae

Genus

Paracoosia Kobayashi, 1936

Genus author

Kobayashi T.

Genus etymology

para-, Greek, near, similar to; Coosia, a trilobite genus name

Species

P. langgongsiensis Yuan, Li, Mu, Lin & Zhu, 2012

Species author

Yuan Jinliang, Li Yue, Mu Xinan,

Species etymology

Langgongsi, Langgongsi Temple, Chuanjingshan, Dazhongcun Township, Cangshan County, Shandong, the locality of this species

Age

Drumian (Miaolingian, Cambrian)

Distribution

Shandong

Diagnosis

Dorsal shield ovate, smooth, cephalon and pygidium subequal. Cephalon semicircular; glabella short, truncate-conical with rounded front and 3 pairs of shallow lateral glabellar furrows; preglabellar field rather narrow; anterior border ex- tremely wide, clearly demarcated from the preglabellar field; fixigenae narrow in the palpebral area; palpebral lobes short, less than one-third the glabellar length; eye ridges distinct; librigenae wide with short stout genal spines. Thorax of 8 segments; pleurae much wider than the axis; pleural furrows distinct. Pygidium semi-elliptical; axis short and narrow, divided into 7-8 rings; pleural region wide and flat with rather shallow pleural furrows; border extremely wide and flat, slightly concave medially. Compared with the type species, the palpebral lobes are smaller.