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Parablackwelderia
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Damesellacea
Family:
Damesellidea
Formal Genus Name and Reference:
Parablackwelderia KOBAYASHI, 1942
Type Species:
Blackwelderia spectabilis RESSER & ENDO, in ENDO & RESSER 1937
Images
(Click to enlarge in a new window)
Fig. 234, 1. *P. spectabilis (Resser & Endo), Kushanian, Manch., a, b, ceph., pyg., x7 (419).
Synonyms
Geographic Distribution
E.Asia
Age Range
Beginning Stage in Treatise Usage:
Up.M.Cam.
Beginning International Stage:
Drumian
Fraction Up In Beginning Stage:
0
Beginning Date:
504.5
Ending Stage in Treatise Usage:
Up.M.Cam.
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Glabella tapering, with 2 pairs of short faint diagonal lateral furrows, preglabellar field and anterior border furrow present, anterior border rimlike, eye ridges faint, eyes opposite the anterior 0.25 of glabella, fixigenae with palpebral areas 0.7 of glabellar width, posterior areas wide (exsag.), longer (tr.) than occipital ring, librigenae with medium-length genal spines. Pygidium semicircular, 3 axial rings and terminal, pleural fields moderately convex, equal to axis in width, with 5 pleurae, 5 pairs of pleural furrows, no border furrow, narrow flat border with 7 pairs of marginal spines of variable length. Surface unknown. Up.M.Cam., E.Asia.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Damesellacea
Family:
Damesellidea
Formal Genus Name and Reference:
Parablackwelderia KOBAYASHI, 1942
Type Species:
Blackwelderia spectabilis RESSER & ENDO, in ENDO & RESSER 1937
Images
(Click to enlarge in a new window)
Fig. 234, 1. *P. spectabilis (Resser & Endo), Kushanian, Manch., a, b, ceph., pyg., x7 (419).
Synonyms
Geographic Distribution
E.Asia
Age Range
Beginning Stage in Treatise Usage:
Up.M.Cam.
Beginning International Stage:
Drumian
Fraction Up In Beginning Stage:
0
Beginning Date:
504.5
Ending Stage in Treatise Usage:
Up.M.Cam.
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Glabella tapering, with 2 pairs of short faint diagonal lateral furrows, preglabellar field and anterior border furrow present, anterior border rimlike, eye ridges faint, eyes opposite the anterior 0.25 of glabella, fixigenae with palpebral areas 0.7 of glabellar width, posterior areas wide (exsag.), longer (tr.) than occipital ring, librigenae with medium-length genal spines. Pygidium semicircular, 3 axial rings and terminal, pleural fields moderately convex, equal to axis in width, with 5 pleurae, 5 pairs of pleural furrows, no border furrow, narrow flat border with 7 pairs of marginal spines of variable length. Surface unknown. Up.M.Cam., E.Asia.