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Pianaspis
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Olenacea
Family:
Papyriaspididae
Formal Genus Name and Reference:
Pianaspis Saito & SAKAKURA, 1936
Type Species:
P. kodairai
Images
(Click to enlarge in a new window)
Synonyms
Geographic Distribution
E.Asia
Age Range
Beginning Stage in Treatise Usage:
M.Cam.
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
M.Cam.
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Differs from Papyriaspis in having wider thoracic axis and more deeply furrowed thoracic pleurae with short pleural spines
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Olenacea
Family:
Papyriaspididae
Formal Genus Name and Reference:
Pianaspis Saito & SAKAKURA, 1936
Type Species:
P. kodairai
Images
(Click to enlarge in a new window)Synonyms
Geographic Distribution
E.Asia
Age Range
Beginning Stage in Treatise Usage:
M.Cam.
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
M.Cam.
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Differs from Papyriaspis in having wider thoracic axis and more deeply furrowed thoracic pleurae with short pleural spines