Ptychopariida

Changshania conica

Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Changshaniidae

Jiangshanian (Furongian, Cambrian)Shandong, Hebei, Northeast China and other parts of North China
Changshania conica — photo 1
Photo 1 · Early literature specimen figures (Lu Yanhao Ventral cephalic restoration (Qian Literature ventrally compressed specimen et al. 1965;) Yiyuan 1994) (Shandong; Qian Yiyuan 1994) Complete dorsal exoskeleton (Shandong; discovered and Ventrally compressed donated by L.Y, now housed at the Nanjing Institute of specimen (Shandong; L.Y) Geology and Palaeontology)
Changshania conica — photo 2
Photo 2 · Early literature specimen figures (Lu Yanhao Ventral cephalic restoration (Qian Literature ventrally compressed specimen et al. 1965;) Yiyuan 1994) (Shandong; Qian Yiyuan 1994) Complete dorsal exoskeleton (Shandong; discovered and Ventrally compressed donated by L.Y, now housed at the Nanjing Institute of specimen (Shandong; L.Y) Geology and Palaeontology)
Changshania conica — photo 3
Photo 3 · Early literature specimen figures (Lu Yanhao Ventral cephalic restoration (Qian Literature ventrally compressed specimen et al. 1965;) Yiyuan 1994) (Shandong; Qian Yiyuan 1994) Complete dorsal exoskeleton (Shandong; discovered and Ventrally compressed donated by L.Y, now housed at the Nanjing Institute of specimen (Shandong; L.Y) Geology and Palaeontology)
Changshania conica — photo 4
Photo 4 · Early literature specimen figures (Lu Yanhao Ventral cephalic restoration (Qian Literature ventrally compressed specimen et al. 1965;) Yiyuan 1994) (Shandong; Qian Yiyuan 1994) Complete dorsal exoskeleton (Shandong; discovered and Ventrally compressed donated by L.Y, now housed at the Nanjing Institute of specimen (Shandong; L.Y) Geology and Palaeontology)
Changshania conica — photo 5
Photo 5 · Early literature specimen figures (Lu Yanhao Ventral cephalic restoration (Qian Literature ventrally compressed specimen et al. 1965;) Yiyuan 1994) (Shandong; Qian Yiyuan 1994) Complete dorsal exoskeleton (Shandong; discovered and Ventrally compressed donated by L.Y, now housed at the Nanjing Institute of specimen (Shandong; L.Y) Geology and Palaeontology)
Changshania conica — photo 6
Photo 6 · Early literature specimen figures (Lu Yanhao Ventral cephalic restoration (Qian Literature ventrally compressed specimen et al. 1965;) Yiyuan 1994) (Shandong; Qian Yiyuan 1994) Complete dorsal exoskeleton (Shandong; discovered and Ventrally compressed donated by L.Y, now housed at the Nanjing Institute of specimen (Shandong; L.Y) Geology and Palaeontology)
Classification
Order Ptychopariida / Suborder Ptychopariina / Superfamily Ptychoparioidea / Family Changshaniidae
Genus
Changshania Sun, 1923
Genus author
Sun Yunchu
Genus etymology
Changshan, Changshan'gou, north of Zhaogezhuang, Tangshan, Hebei
Species
C. conica Sun, 1923
Species author
Sun Yunchu
Species etymology
conica, Latin, conical
Age
Jiangshanian (Furongian, Cambrian)
Distribution
Shandong, Hebei, Northeast China and other parts of North China
Synonyms
Changshania shihuigouensis
Diagnosis
Dorsal shield elongate-elliptical, axis fusiform. Cephalon semi-elliptical; glabella slender, conical, glabellar furrows indistinct; anterior border narrow; preglabellar field wide and flat; occipital furrow straight and distinct; occipital ring of uniform width; dorsal furrows shallow and distinct; palpebral lobes long; fixigenae narrow; librigenae wide with medium-length, slightly curved genal spines. Thorax of ten segments; pleurae wider than the axis, pleural furrows distinct, pleural spines short. Pygidium wide, somewhat semi-elliptical; axis conical with four axial rings and a terminal lobe; border of uniform width, slightly concave medially; anterior lateral angles slightly pointed but not spinose.
Remarks
This species is the type species of the genus Changshania.