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Tellerina
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Ptychaspidacea
Family:
Saukiidae
Formal Genus Name and Reference:
Tellerina Ulrich & RESSER, 1933
Type Species:
Dikellocephalus crassimarginatus WHITFIELD, 1882
Images
(Click to enlarge in a new window)
Fig. 239, 6. *T. crassimarginatus (Whitfield), Wis., 6a, exoskel., x0.7, 6 b, hypostoma, x1(487, 488)
Synonyms
Geographic Distribution
N.Am.-NE.Asia
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian(Trempeal.)
Beginning International Stage:
Jiangshanian
Fraction Up In Beginning Stage:
0
Beginning Date:
491.4
Ending Stage in Treatise Usage:
Upper Cambrian(Trempeal.)
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
0
Ending Date:
486.85
Description
Glabella low, rectangular, front nearly straight, posterior glabellar furrow complete, 2nd pair short, faint, no preglabellar field, anterior border furrow shallow, occurring only at sides and slanting backward to corners of glabella, anterior border medium in width, fixigenae with posterior areas 0.7 of length (tr.) of occipital ring, librigenae with united lateral and posterior border furrows running into bases of short broad genal spines. Pygidium subcircular, axis convex, wider than pleural fields, tapering 0.7 of length, with short, broad postaxial ridge, 4 to 5 axial rings and terminal with 1 faint ring, pleural fields low, merging into broad flat border, 4 pairs of interpleural grooves curving on to border, 5 pairs of pleural furrows, anterior on segments, fading out on edge of border. Surface finely granulose. Upper Cambrian(Trempeal.), N.Am.-NE.Asia.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Ptychaspidacea
Family:
Saukiidae
Formal Genus Name and Reference:
Tellerina Ulrich & RESSER, 1933
Type Species:
Dikellocephalus crassimarginatus WHITFIELD, 1882
Images
(Click to enlarge in a new window)
Fig. 239, 6. *T. crassimarginatus (Whitfield), Wis., 6a, exoskel., x0.7, 6 b, hypostoma, x1(487, 488)
Synonyms
Geographic Distribution
N.Am.-NE.Asia
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian(Trempeal.)
Beginning International Stage:
Jiangshanian
Fraction Up In Beginning Stage:
0
Beginning Date:
491.4
Ending Stage in Treatise Usage:
Upper Cambrian(Trempeal.)
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
0
Ending Date:
486.85
Description
Glabella low, rectangular, front nearly straight, posterior glabellar furrow complete, 2nd pair short, faint, no preglabellar field, anterior border furrow shallow, occurring only at sides and slanting backward to corners of glabella, anterior border medium in width, fixigenae with posterior areas 0.7 of length (tr.) of occipital ring, librigenae with united lateral and posterior border furrows running into bases of short broad genal spines. Pygidium subcircular, axis convex, wider than pleural fields, tapering 0.7 of length, with short, broad postaxial ridge, 4 to 5 axial rings and terminal with 1 faint ring, pleural fields low, merging into broad flat border, 4 pairs of interpleural grooves curving on to border, 5 pairs of pleural furrows, anterior on segments, fading out on edge of border. Surface finely granulose. Upper Cambrian(Trempeal.), N.Am.-NE.Asia.