Ptychopariida

Chekiangaspis chekiangensis

Order Ptychopariida / Suborder Olenina / Family Olenidae

Stage 10 (Furongian, Cambrian)Zhejiang, Guizhou
Chekiangaspis chekiangensis — photo 1
Photo 1 · Restoration (Lu Yanhao et al. Literature specimen 11524 (Guizhou; Qian 1963) Yiyuan 1961) Lectotype 11525 (Guizhou; Lu Yanhao et al. 1963) Literature specimens 66408, 66406 (Zhejiang; Lu Yanhao et al. 1989)
Chekiangaspis chekiangensis — photo 2
Photo 2 · Restoration (Lu Yanhao et al. Literature specimen 11524 (Guizhou; Qian 1963) Yiyuan 1961) Lectotype 11525 (Guizhou; Lu Yanhao et al. 1963) Literature specimens 66408, 66406 (Zhejiang; Lu Yanhao et al. 1989)
Chekiangaspis chekiangensis — photo 3
Photo 3 · Restoration (Lu Yanhao et al. Literature specimen 11524 (Guizhou; Qian 1963) Yiyuan 1961) Lectotype 11525 (Guizhou; Lu Yanhao et al. 1963) Literature specimens 66408, 66406 (Zhejiang; Lu Yanhao et al. 1989)
Chekiangaspis chekiangensis — photo 4
Photo 4 · Restoration (Lu Yanhao et al. Literature specimen 11524 (Guizhou; Qian 1963) Yiyuan 1961) Lectotype 11525 (Guizhou; Lu Yanhao et al. 1963) Literature specimens 66408, 66406 (Zhejiang; Lu Yanhao et al. 1989)
Chekiangaspis chekiangensis — photo 5
Photo 5 · Restoration (Lu Yanhao et al. Literature specimen 11524 (Guizhou; Qian 1963) Yiyuan 1961) Lectotype 11525 (Guizhou; Lu Yanhao et al. 1963) Literature specimens 66408, 66406 (Zhejiang; Lu Yanhao et al. 1989)
Classification
Order Ptychopariida / Suborder Olenina / Family Olenidae
Genus
Chekiangaspis Lu in Chien, 1961
Genus author
Lu Yanhao
Genus etymology
Chekiang, Zhejiang Province; aspis, Greek, shield
Species
C. chekiangensis Lu in Chien, 1961
Species author
Lu Yanhao
Species etymology
Chekiang, Zhejiang Province
Age
Stage 10 (Furongian, Cambrian)
Distribution
Zhejiang, Guizhou
Diagnosis
An opisthoparian trilobite. Cranidium trapezoidal; glabella wide and short, truncate-conical, with 3 pairs of glabellar furrows; occipital furrow deep, occipital ring short, occipital spine strong; fixigenae flat, posterior wings triangular; palpebral lobes small, eye ridges long; preglabellar field long; anterior border narrow with slightly recurved anterior margin; anterior branches of facial sutures nearly parallel; librigenae wide with long genal spines. Thorax of 12 segments; an extremely long axial spine arising from segment 8; pleural furrows wide and deep, pleural spines short and pointed. Pygidium small, semicircular to subtriangular; axis conical with pointed posterior end reaching the border; border extremely narrow.
Remarks
This species is the type species of the genus Chekiangaspis.