Asaphida

Proceratopyge (Sinoproceratopyge) constrictus

Order Asaphida / Superfamily Asaphoidea / Family Ceratopygidae

Stage 10 (Furongian, Cambrian)Zhejiang
Proceratopyge (Sinoproceratopyge) constrictus — photo 1
Photo 1 · pro-, before, forward; Ceratopyge, a trilobite genus name; sin-, Greek, China Type specimen (Zhejiang; Lu Yanhao et al. Literature specimen figures (Zhejiang; Lu 1974) Yanhao et al. 1989) Complete dorsal exoskeleton in Complete dorsal exoskeleton on a limestone-shale interface, with shale (Zhejiang; Baishui) recrystallisation on the surface (Zhejiang; Baishui)
Proceratopyge (Sinoproceratopyge) constrictus — photo 2
Photo 2 · pro-, before, forward; Ceratopyge, a trilobite genus name; sin-, Greek, China Type specimen (Zhejiang; Lu Yanhao et al. Literature specimen figures (Zhejiang; Lu 1974) Yanhao et al. 1989) Complete dorsal exoskeleton in Complete dorsal exoskeleton on a limestone-shale interface, with shale (Zhejiang; Baishui) recrystallisation on the surface (Zhejiang; Baishui)
Proceratopyge (Sinoproceratopyge) constrictus — photo 3
Photo 3 · pro-, before, forward; Ceratopyge, a trilobite genus name; sin-, Greek, China Type specimen (Zhejiang; Lu Yanhao et al. Literature specimen figures (Zhejiang; Lu 1974) Yanhao et al. 1989) Complete dorsal exoskeleton in Complete dorsal exoskeleton on a limestone-shale interface, with shale (Zhejiang; Baishui) recrystallisation on the surface (Zhejiang; Baishui)
Proceratopyge (Sinoproceratopyge) constrictus — photo 4
Photo 4 · pro-, before, forward; Ceratopyge, a trilobite genus name; sin-, Greek, China Type specimen (Zhejiang; Lu Yanhao et al. Literature specimen figures (Zhejiang; Lu 1974) Yanhao et al. 1989) Complete dorsal exoskeleton in Complete dorsal exoskeleton on a limestone-shale interface, with shale (Zhejiang; Baishui) recrystallisation on the surface (Zhejiang; Baishui)
Classification
Order Asaphida / Superfamily Asaphoidea / Family Ceratopygidae
Genus
Proceratopyge, subgenus Sinoproceratopyge (Proceratopyge
Genus author
Lu Yanhao & Lin Huanling
Genus etymology
(Sinoproceratopyge))
Species
P. (S.) constrictus Lu in Lu & Chien, 1964
Species author
Lu Yanhao
Species etymology
constrictus, Latin, constricted, referring to the slight median constriction of the glabella
Age
Stage 10 (Furongian, Cambrian)
Distribution
Zhejiang
Synonyms
Proceratopyge constrictus
Diagnosis
Compared with the type species of the subgenus, Proceratopyge (Sinoproceratopyge) kiangshanensis, the glabella is constricted medially, the preglabellar field longer, the pygidium longer, and the lateral spines stouter.