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Finkelnburgia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Plectorthoidea
Family:
Finkelnburgiidae
Formal Genus Name and Reference:
Finkelnburgia Walcott, 1905, p. 277
Type Species:
F. finkelnburgi, OD
Images
(Click to enlarge in a new window)
Fig. 557, 7a-d. F. buttsi, Upper Cambrian, Virginia, $a, b$, exterior, interior of ventral valve, x2, c, d$, interior, exterior of dorsal valve, x2$ (Ulrich & Cooper, 1938).
Synonyms
Marcharella
Geographic Distribution
Northern Hemisphere
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian
Beginning International Stage:
Guzhangian
Fraction Up In Beginning Stage:
50
Beginning Date:
498.75
Ending Stage in Treatise Usage:
Lower Ordovician (Tremadoc)
Ending International Stage:
Tremadocian
Fraction Up In Ending Stage:
100
Ending Date:
477.08
Description
Transversely semioval with variably shaped cardinal extremities, multicostellate, dental plates recessive, pseudospondylium prolonged forward as median ridge, brachiophores blunt, divergent, rudimentary cardinal process rarely developed.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Plectorthoidea
Family:
Finkelnburgiidae
Formal Genus Name and Reference:
Finkelnburgia Walcott, 1905, p. 277
Type Species:
F. finkelnburgi, OD
Images
(Click to enlarge in a new window)
Fig. 557, 7a-d. F. buttsi, Upper Cambrian, Virginia, $a, b$, exterior, interior of ventral valve, x2, c, d$, interior, exterior of dorsal valve, x2$ (Ulrich & Cooper, 1938).
Synonyms
Marcharella
Geographic Distribution
Northern Hemisphere
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian
Beginning International Stage:
Guzhangian
Fraction Up In Beginning Stage:
50
Beginning Date:
498.75
Ending Stage in Treatise Usage:
Lower Ordovician (Tremadoc)
Ending International Stage:
Tremadocian
Fraction Up In Ending Stage:
100
Ending Date:
477.08
Description
Transversely semioval with variably shaped cardinal extremities, multicostellate, dental plates recessive, pseudospondylium prolonged forward as median ridge, brachiophores blunt, divergent, rudimentary cardinal process rarely developed.