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Asaphopsis
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Uncertain
Family:
Dikelokephalinidae
Formal Genus Name and Reference:
Asaphopsis MANSUY, 1920
Type Species:
A. jacobi
Images
(Click to enlarge in a new window)
Fig. 268, 2. A. nakamurai Kobayashi, Korea, 2 a, b, cran., pyg., X1 (419)."
Synonyms
Geographic Distribution
E.Asia-Tasm.
Age Range
Beginning Stage in Treatise Usage:
L.Ord.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
L.Ord.
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Glabella moderately convex, broadly tapering, front rounded, with 3 pairs of short, pitlike lateral furrows, eyes of medium size, slightly behind center of glabella, frontal area slightly more than 0.3 of length (sag.) of cranidium, fixigenae with palpebral areas slightly less than 0.5 of glabellar width, posterior areas of medium width (exsag.), 0.75 of length (tr.) of occipital ring. Pygidium subquadrate, axis convex, narrow, tapering 0.83 of length to narrow pointed end, with 7 or 8 axial rings and terminal, pleural fields twice width of axis, with 6 or 7 pleurae separated by backward-curved interpleural grooves running nearly to margin, border narrow, flat or concave, with pair of medium-length spines at posterolateral corners, posterior margin straight. L.Ord., E.Asia-Tasm.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Uncertain
Family:
Dikelokephalinidae
Formal Genus Name and Reference:
Asaphopsis MANSUY, 1920
Type Species:
A. jacobi
Images
(Click to enlarge in a new window)
Fig. 268, 2. A. nakamurai Kobayashi, Korea, 2 a, b, cran., pyg., X1 (419)."
Synonyms
Geographic Distribution
E.Asia-Tasm.
Age Range
Beginning Stage in Treatise Usage:
L.Ord.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
L.Ord.
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Glabella moderately convex, broadly tapering, front rounded, with 3 pairs of short, pitlike lateral furrows, eyes of medium size, slightly behind center of glabella, frontal area slightly more than 0.3 of length (sag.) of cranidium, fixigenae with palpebral areas slightly less than 0.5 of glabellar width, posterior areas of medium width (exsag.), 0.75 of length (tr.) of occipital ring. Pygidium subquadrate, axis convex, narrow, tapering 0.83 of length to narrow pointed end, with 7 or 8 axial rings and terminal, pleural fields twice width of axis, with 6 or 7 pleurae separated by backward-curved interpleural grooves running nearly to margin, border narrow, flat or concave, with pair of medium-length spines at posterolateral corners, posterior margin straight. L.Ord., E.Asia-Tasm.