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Saukia
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Ptychaspidacea
Family:
Saukiidae
Formal Genus Name and Reference:
Saukia WALCOTT, 1914
Type Species:
Dikellocephalus lodensis Whitfield, 1880, based on librigena (=Saukia ornata Ulrich & Resser, 1933, based on cranidium, fide LOCHMAN, 1956)
Images
(Click to enlarge in a new window)
Fig. 239, 1. S. acuta Ulrich & Resser, Wis., exoskel., x1.3(461, 487)
Synonyms
Sinosaukia
Geographic Distribution
Upper Cambrian(Trempeal.), 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 rectangular, sides diverging slightly forward, front nearly straight, posterior part low, anterior lobe convex, with 2 pairs of lateral furrows, posterior pair complete, no preglabellar field, anterior border furrow narrow, straight and paralleling preglabellar furrow or running into it at corners of glabella, anterior border narrow, fixigenae narrow, with posterior areas about 0.5 of length (tr.) of occipital ring, librigenae with narrow posterior and lateral border furrows meeting, long slender genal spines. Pygidium ovoid, axis wider than pleural regions, convex, tapering 0.75 of length, with postaxial ridge reaching margin, 4 axial rings and terminal, pleural fields low, merging into narrow sloping border, with 4 pairs of interpleural grooves and 5 pairs of parallel pleural furrows lying anteriorly on each segment. Surface coarsely 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:
Saukia WALCOTT, 1914
Type Species:
Dikellocephalus lodensis Whitfield, 1880, based on librigena (=Saukia ornata Ulrich & Resser, 1933, based on cranidium, fide LOCHMAN, 1956)
Images
(Click to enlarge in a new window)
Fig. 239, 1. S. acuta Ulrich & Resser, Wis., exoskel., x1.3(461, 487)
Synonyms
Sinosaukia
Geographic Distribution
Upper Cambrian(Trempeal.), 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 rectangular, sides diverging slightly forward, front nearly straight, posterior part low, anterior lobe convex, with 2 pairs of lateral furrows, posterior pair complete, no preglabellar field, anterior border furrow narrow, straight and paralleling preglabellar furrow or running into it at corners of glabella, anterior border narrow, fixigenae narrow, with posterior areas about 0.5 of length (tr.) of occipital ring, librigenae with narrow posterior and lateral border furrows meeting, long slender genal spines. Pygidium ovoid, axis wider than pleural regions, convex, tapering 0.75 of length, with postaxial ridge reaching margin, 4 axial rings and terminal, pleural fields low, merging into narrow sloping border, with 4 pairs of interpleural grooves and 5 pairs of parallel pleural furrows lying anteriorly on each segment. Surface coarsely granulose. Upper Cambrian(Trempeal.), N. Am.-NE.Asia.