Ptychopariida

Kailiella angusta

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Alokistocaridae

Wuliuan (Miaolingian, Cambrian)Guizhou

Kailiella angusta — photo 1 — Photo 1 · Type specimen figures (Guizhou; Lu Yanhao et al. 1974) Complete dorsal exoskeleton Literature specimen figures (Guizhou; Yuan (Guizhou; Guodong) Jinliang et al. 2002)

Kailiella angusta — photo 2 — Photo 2 · Type specimen figures (Guizhou; Lu Yanhao et al. 1974) Complete dorsal exoskeleton Literature specimen figures (Guizhou; Yuan (Guizhou; Guodong) Jinliang et al. 2002)

Kailiella angusta — photo 3 — Photo 3 · Type specimen figures (Guizhou; Lu Yanhao et al. 1974) Complete dorsal exoskeleton Literature specimen figures (Guizhou; Yuan (Guizhou; Guodong) Jinliang et al. 2002)

Classification

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Alokistocaridae

Genus

Kailiella Lu & Chien in Lu 1974

Genus author

Lu Yanhao & Qian Yiyuan

Genus etymology

Kaili, Kaili, Guizhou, the locality; -ella, a diminutive adjectival suffix

Species

K. angusta Lu & Chien in Lu 1974

Species author

Lu Yanhao & Qian Yiyuan

Species etymology

angust-, Latin, narrow, referring to the narrow anterior border

Age

Wuliuan (Miaolingian, Cambrian)

Distribution

Guizhou

Synonyms

Kailiella lingchuanensis

Diagnosis

Dorsal shield gently convex, ovate to long-ovate. Cranidium subtrapezoidal; glabella truncate-conical with rounded front and 3-4 pairs of shallow, wide glabellar furrows; occipital furrow shallow; occipital ring semi-elliptical with a small median node; dorsal furrows deep; preglabellar field wide; anterior border narrow, convex, slightly triangular; fixigenae medium-wide; anterior branches of facial sutures extending forward nearly parallel from the anterior end of the palpebral lobes; librigenae medium with slender long genal spines; eye ridges stout, palpebral lobes large, about half the glabellar length. Thorax of 13 segments; axis convex, tapering backward; pleurae extending straight, with recurved sickle- shaped spines at their distal ends. Pygidium extremely small, axis divided into two rings.

Remarks

This species is the type species of the genus Kailiella.