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Tylothyris
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Mucrospiriferidae
Formal Genus Name and Reference:
Tylothyris NORTH, 1920, p. 195
Type Species:
Cyrtia laminosa M'COR, 1844, p. 137, OD
Images
(Click to enlarge in a new window)
Fig. 1228, 2a-g. *T. laminosa (M’Coy), Visean, Ireland, a-f, dorsal, ventral, anterior, lateral, and posterior views, dorsal interior, g, oblique anterior view of ventral interior, X1.5 (Brunton, 1984).
Synonyms
Welleria
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Middle Devonian (upper Givetian)
Beginning International Stage:
Givetian
Fraction Up In Beginning Stage:
78
Beginning Date:
380.31
Ending Stage in Treatise Usage:
Carboniferous (Visean)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
330.34
Description
Small to medium, biconvex, transverse, with angular to rounded cardinal extremities, ventral interarea low to high, apsacline to catacline, fold and sulcus smooth, flanks with simple, rounded plications and numerous imbricate growth lamellae, dental plates and median septum partly buried in callus
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Mucrospiriferidae
Formal Genus Name and Reference:
Tylothyris NORTH, 1920, p. 195
Type Species:
Cyrtia laminosa M'COR, 1844, p. 137, OD
Images
(Click to enlarge in a new window)
Fig. 1228, 2a-g. *T. laminosa (M’Coy), Visean, Ireland, a-f, dorsal, ventral, anterior, lateral, and posterior views, dorsal interior, g, oblique anterior view of ventral interior, X1.5 (Brunton, 1984).
Synonyms
Welleria
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Middle Devonian (upper Givetian)
Beginning International Stage:
Givetian
Fraction Up In Beginning Stage:
78
Beginning Date:
380.31
Ending Stage in Treatise Usage:
Carboniferous (Visean)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
330.34
Description
Small to medium, biconvex, transverse, with angular to rounded cardinal extremities, ventral interarea low to high, apsacline to catacline, fold and sulcus smooth, flanks with simple, rounded plications and numerous imbricate growth lamellae, dental plates and median septum partly buried in callus