Agnostida

Peronopsis taijiangensis

Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family Peronopsidae

Cambrian, Miaolingian, WuliuanGuizhou
Peronopsis taijiangensis — photo 1
Photo 1 · Complete dorsal shield Cephalon holotype GK1017 (Guizhou; Huang Youzhuang et al. 1994) (Guizhou; Baishui) Illustrated specimens (Guizhou; Yuan Jinliang et al. 2002)
Peronopsis taijiangensis — photo 2
Photo 2 · Complete dorsal shield Cephalon holotype GK1017 (Guizhou; Huang Youzhuang et al. 1994) (Guizhou; Baishui) Illustrated specimens (Guizhou; Yuan Jinliang et al. 2002)
Peronopsis taijiangensis — photo 3
Photo 3 · Complete dorsal shield Cephalon holotype GK1017 (Guizhou; Huang Youzhuang et al. 1994) (Guizhou; Baishui) Illustrated specimens (Guizhou; Yuan Jinliang et al. 2002)
Classification
Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family Peronopsidae
Genus
Peronopsis Hawle & Corda, 1847
Genus author
Hawle I. & Corda A. J. C.
Genus etymology
Peronopsis, resembling a brooch or a boot.
Species
P. taijiangensis Huang & Yuan, 1994
Species author
Huang Youzhuang, Yuan Jinliang
Species etymology
Taijiang, from Taijiang, Guizhou.
Age
Cambrian, Miaolingian, Wuliuan
Distribution
Guizhou
Synonyms
Peronopsis gedongensis
Diagnosis
Cephalon and pygidium nearly square. Glabella convex, frontal segment pentagonal to elongate-semicircular-oval; F3 nearly straight; posterior segment slightly expanded backward, slightly constricted and narrowed medially, posterior end subacutely rounded, posterior part convex high, with an elongate small node at the point of greatest convexity; dorsal furrow deep; no preglabellar median furrow; basal lobe of moderate size; border narrow and convex. Pygidial axis broad and long, second axial ring constricted inward constricted, with an elongate small node in its mid-posterior part; posterior axial ring wedge-shaped, posterior end acutely angled, nearly reaching the pygidial border furrow; border furrow broad and shallow; with a pair of short marginal spines.