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Fluctuaria
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Linoproductoidea
Family:
Linoproductidae
Formal Genus Name and Reference:
Fluctuaria Muir-Wood & COOPER, 1960, p. 303
Type Species:
Productus undatus DEFRANCE, 1826, p. 354, OD
Images
(Click to enlarge in a new window)
Fig. 366, 2a-d. *F. undata (Defrance), Asbian, Visé, Belgium, ventral, dorsal, posterior, lateral views of specimen, × 2 (Muir-Wood & Cooper, 1960).
Synonyms
Geographic Distribution
Eurasia, ?North America
Age Range
Beginning Stage in Treatise Usage:
Lower Carboniferous (upper Viséan)
Beginning International Stage:
Visean
Fraction Up In Beginning Stage:
66
Beginning Date:
335.91
Ending Stage in Treatise Usage:
Upper Carboniferous (?lower Moscovian)
Ending International Stage:
Moscovian
Fraction Up In Ending Stage:
33
Ending Date:
312.47
Description
Small, elongate, nongeniculate profile, rugae prominent, entire, increasing in size anteriorly, spines at hinge, ears, otherwise rare, cardinal process small, sessile, cardinal ridges weak
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Linoproductoidea
Family:
Linoproductidae
Formal Genus Name and Reference:
Fluctuaria Muir-Wood & COOPER, 1960, p. 303
Type Species:
Productus undatus DEFRANCE, 1826, p. 354, OD
Images
(Click to enlarge in a new window)
Fig. 366, 2a-d. *F. undata (Defrance), Asbian, Visé, Belgium, ventral, dorsal, posterior, lateral views of specimen, × 2 (Muir-Wood & Cooper, 1960).
Synonyms
Geographic Distribution
Eurasia, ?North America
Age Range
Beginning Stage in Treatise Usage:
Lower Carboniferous (upper Viséan)
Beginning International Stage:
Visean
Fraction Up In Beginning Stage:
66
Beginning Date:
335.91
Ending Stage in Treatise Usage:
Upper Carboniferous (?lower Moscovian)
Ending International Stage:
Moscovian
Fraction Up In Ending Stage:
33
Ending Date:
312.47
Description
Small, elongate, nongeniculate profile, rugae prominent, entire, increasing in size anteriorly, spines at hinge, ears, otherwise rare, cardinal process small, sessile, cardinal ridges weak