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Chuangia
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Marjumiacea
Family:
Cheilocephalidae
Formal Genus Name and Reference:
Chuangia WALCOTT, 1911
Type Species:
Ptychoparia? batia WALCOTT, 1905
Images
(Click to enlarge in a new window)
Fig. 232, 4. *C. batia (Walcotr), China(Shantung), 4a, b, cran., x1, 4c, d, pyg., x1 (315).
Synonyms
Schantungia, Shantungia, Chuagia
Geographic Distribution
NE.Asia
Age Range
Beginning Stage in Treatise Usage:
Low.U. Cam.(Changshanian)
Beginning International Stage:
Paibian
Fraction Up In Beginning Stage:
0
Beginning Date:
494.95
Ending Stage in Treatise Usage:
Low.U. Cam.(Changshanian)
Ending International Stage:
Jiangshanian
Fraction Up In Ending Stage:
0
Ending Date:
491.4
Description
Glabella moderately convex, truncate-tapering, with 2 or 3 pairs of faint lateral furrows, preglabellar field very narrow, palpebral furrows and eye ridges narrow, eyes of medium size, posterior to center of glabella, fixigenae with palpebral areas 0.6 of glabellar width, posterior areas narrow, long (tr.). Pygidium broadly transverse, axis narrower than pleural fields, low short postaxial ridge present, only axial furrows visible on exterior but 3 axial rings and long terminal seen on interior, 3 broad faint pleurae, no border furrow
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Marjumiacea
Family:
Cheilocephalidae
Formal Genus Name and Reference:
Chuangia WALCOTT, 1911
Type Species:
Ptychoparia? batia WALCOTT, 1905
Images
(Click to enlarge in a new window)
Fig. 232, 4. *C. batia (Walcotr), China(Shantung), 4a, b, cran., x1, 4c, d, pyg., x1 (315).
Synonyms
Schantungia, Shantungia, Chuagia
Geographic Distribution
NE.Asia
Age Range
Beginning Stage in Treatise Usage:
Low.U. Cam.(Changshanian)
Beginning International Stage:
Paibian
Fraction Up In Beginning Stage:
0
Beginning Date:
494.95
Ending Stage in Treatise Usage:
Low.U. Cam.(Changshanian)
Ending International Stage:
Jiangshanian
Fraction Up In Ending Stage:
0
Ending Date:
491.4
Description
Glabella moderately convex, truncate-tapering, with 2 or 3 pairs of faint lateral furrows, preglabellar field very narrow, palpebral furrows and eye ridges narrow, eyes of medium size, posterior to center of glabella, fixigenae with palpebral areas 0.6 of glabellar width, posterior areas narrow, long (tr.). Pygidium broadly transverse, axis narrower than pleural fields, low short postaxial ridge present, only axial furrows visible on exterior but 3 axial rings and long terminal seen on interior, 3 broad faint pleurae, no border furrow