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Prochuangia
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Damesellacea
Family:
Damesellidea
Formal Genus Name and Reference:
Prochuangia KOBAYASHI, 1935
Type Species:
P. mansuyi
Images
(Click to enlarge in a new window)
Fig. 236, 1. ·P. manstlyi, S.Korea; Ia,b, ceph., pyg., Xl.5 (419).
Synonyms
Geographic Distribution
E.Asia-S.Asia
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian(Changshan)
Beginning International Stage:
Paibian
Fraction Up In Beginning Stage:
73.3
Beginning Date:
494.95
Ending Stage in Treatise Usage:
Upper Cambrian(Changshan)
Ending International Stage:
Jiangshanian
Fraction Up In Ending Stage:
87.5
Ending Date:
491.4
Description
Glabella low, front nearly straight, lateral furrows very faint; no preglabellar field, broad shallow anterior border furrow, narrow anterior border; no eye ridges, eyes almost opposite posterior 0.3 of glabella; fixigenae with palpebral areas 0.5 of glabellar width, posterior areas below medium width (exsag.); librigenae with short genal spllles. Pygidium subrectangular, axis tapered nearly full length, with 4 axial rings and terminal; pleural fields low, about same in width as axis, anterior pair of pleural furrows distinct, all others and interpleural grooves obsolete, spines developed from posterior 0.5 of 1st pleurae and entire 2nd pleurae; border undeveloped (97).
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Damesellacea
Family:
Damesellidea
Formal Genus Name and Reference:
Prochuangia KOBAYASHI, 1935
Type Species:
P. mansuyi
Images
(Click to enlarge in a new window)
Fig. 236, 1. ·P. manstlyi, S.Korea; Ia,b, ceph., pyg., Xl.5 (419).
Synonyms
Geographic Distribution
E.Asia-S.Asia
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian(Changshan)
Beginning International Stage:
Paibian
Fraction Up In Beginning Stage:
73.3
Beginning Date:
494.95
Ending Stage in Treatise Usage:
Upper Cambrian(Changshan)
Ending International Stage:
Jiangshanian
Fraction Up In Ending Stage:
87.5
Ending Date:
491.4
Description
Glabella low, front nearly straight, lateral furrows very faint; no preglabellar field, broad shallow anterior border furrow, narrow anterior border; no eye ridges, eyes almost opposite posterior 0.3 of glabella; fixigenae with palpebral areas 0.5 of glabellar width, posterior areas below medium width (exsag.); librigenae with short genal spllles. Pygidium subrectangular, axis tapered nearly full length, with 4 axial rings and terminal; pleural fields low, about same in width as axis, anterior pair of pleural furrows distinct, all others and interpleural grooves obsolete, spines developed from posterior 0.5 of 1st pleurae and entire 2nd pleurae; border undeveloped (97).