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Phricodothyris
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Reticularioidea
Family:
Elythidae
Formal Genus Name and Reference:
Phricodothyris GEORGE, 1932, p. 524
Type Species:
P. lucerna, OD
Images
(Click to enlarge in a new window)
Fig. 1242, 1a-d. * P. lucerna, Visean, Great Britain, holotype, dorsal, ventral, lateral, and anterior views, X1 (George, 1932)., ——Fig. 1242, le-f. P. verecunda George, dorsal and ventral interiors, X4 (Brunton, 1984).
Synonyms
Neophricadothyris, Condrathyris
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Carboniferous (Mississippian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Small to medium size, unequally biconvex, outline subovate, fold and sulcus absent, anterior commissure rectimarginate, ribbing absent, ventral interarea well delimited, finely vertically striated only in primary layer, short flat deltidial plates nearly at right angle to interarea, ventral interior with very low dental flanges, dorsal interior with dental sockets nearly parallel to cardinal margin, crural bases broad, flattened, directed dorsomedially, sometimes forming short crural plates, dorsal septum and adminicula absent, low myophragm present in some species, minute bulbous ctenophoridium present in at least some species, microornament including very fine interspinous pustules or spinules, spiralia directed slightly posterolaterally
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Reticularioidea
Family:
Elythidae
Formal Genus Name and Reference:
Phricodothyris GEORGE, 1932, p. 524
Type Species:
P. lucerna, OD
Images
(Click to enlarge in a new window)
Fig. 1242, 1a-d. * P. lucerna, Visean, Great Britain, holotype, dorsal, ventral, lateral, and anterior views, X1 (George, 1932)., ——Fig. 1242, le-f. P. verecunda George, dorsal and ventral interiors, X4 (Brunton, 1984).
Synonyms
Neophricadothyris, Condrathyris
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Carboniferous (Mississippian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Small to medium size, unequally biconvex, outline subovate, fold and sulcus absent, anterior commissure rectimarginate, ribbing absent, ventral interarea well delimited, finely vertically striated only in primary layer, short flat deltidial plates nearly at right angle to interarea, ventral interior with very low dental flanges, dorsal interior with dental sockets nearly parallel to cardinal margin, crural bases broad, flattened, directed dorsomedially, sometimes forming short crural plates, dorsal septum and adminicula absent, low myophragm present in some species, minute bulbous ctenophoridium present in at least some species, microornament including very fine interspinous pustules or spinules, spiralia directed slightly posterolaterally