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Unispirifer
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Spiriferoidea
Family:
Spiriferidae
Formal Genus Name and Reference:
Unispirifer Campbell, 1957, p. 67
Type Species:
Spirifer striatoconvolutus Benson & Dun in Benson, Dun, & BROWNE, 1920, p. 350, OD
Images
(Click to enlarge in a new window)
Fig. 1171, 3a-b. *U. striatoconvolutus (Benson & Dun), Tournaisian, New South Wales, Australia, ventral and dorsal valves, × 1 (Campbell, 1957).
Synonyms
Lytha
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Carboniferous (Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Carboniferous (Visean)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
330.34
Description
Medium to large, strongly transverse with alate, not mucronate, cardinal extremities in both juveniles and adults, lateral slopes with numerous simple, or rarely bifurcating, costae, sulcus with median costa that may bifurcate and several pairs of simple, or very rarely bifurcating, lateral sulcal costae, otherwise similar to Prospira.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Spiriferoidea
Family:
Spiriferidae
Formal Genus Name and Reference:
Unispirifer Campbell, 1957, p. 67
Type Species:
Spirifer striatoconvolutus Benson & Dun in Benson, Dun, & BROWNE, 1920, p. 350, OD
Images
(Click to enlarge in a new window)
Fig. 1171, 3a-b. *U. striatoconvolutus (Benson & Dun), Tournaisian, New South Wales, Australia, ventral and dorsal valves, × 1 (Campbell, 1957).
Synonyms
Lytha
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Carboniferous (Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Carboniferous (Visean)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
330.34
Description
Medium to large, strongly transverse with alate, not mucronate, cardinal extremities in both juveniles and adults, lateral slopes with numerous simple, or rarely bifurcating, costae, sulcus with median costa that may bifurcate and several pairs of simple, or very rarely bifurcating, lateral sulcal costae, otherwise similar to Prospira.