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Mesopholidostrophia
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Strophomenoidea
Family:
Eopholidostrophiidae
Formal Genus Name and Reference:
Mesopholidostrophia Williams, 1950, p. 278, Mesolissostrophia WILLIAMS, 1950, p. 280
Type Species:
Pholidostrophia (M.) nitens, OD
Images
(Click to enlarge in a new window)
Fig. 185, 1a-e. *M. nitens (Williams), Mulde Marl, Homerian, Klintehamn, Gotland, Sweden, $a-c$, ventral, dorsal, lateral views of conjoined valves, BMNH BC 12836, x3$ (new), $d$, ventral interior, USNM 116024b, x3$, e, dorsal interior, USNM 116024c, $\\times_{3}$ (Willliams, 1953a).
Synonyms
Mesolissostrophia
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Silurian (Telychian)
Beginning International Stage:
Telychian
Fraction Up In Beginning Stage:
0
Beginning Date:
438.59
Ending Stage in Treatise Usage:
Silurian (Ludlow)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
100
Ending Date:
422.73
Description
Similar to Eopholidostrophia in outline, profile, but ornament weak or almost absent, pedicle tube often preserved, nacreous shell often developed, denticulation spread along one-third to half of hinge line, ventral process present, cardinal process small, erect, dorsal muscle field weakly impressed posteriorly, open anteriorly, weak dorsal myophragm.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Strophomenoidea
Family:
Eopholidostrophiidae
Formal Genus Name and Reference:
Mesopholidostrophia Williams, 1950, p. 278, Mesolissostrophia WILLIAMS, 1950, p. 280
Type Species:
Pholidostrophia (M.) nitens, OD
Images
(Click to enlarge in a new window)
Fig. 185, 1a-e. *M. nitens (Williams), Mulde Marl, Homerian, Klintehamn, Gotland, Sweden, $a-c$, ventral, dorsal, lateral views of conjoined valves, BMNH BC 12836, x3$ (new), $d$, ventral interior, USNM 116024b, x3$, e, dorsal interior, USNM 116024c, $\\times_{3}$ (Willliams, 1953a).
Synonyms
Mesolissostrophia
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Silurian (Telychian)
Beginning International Stage:
Telychian
Fraction Up In Beginning Stage:
0
Beginning Date:
438.59
Ending Stage in Treatise Usage:
Silurian (Ludlow)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
100
Ending Date:
422.73
Description
Similar to Eopholidostrophia in outline, profile, but ornament weak or almost absent, pedicle tube often preserved, nacreous shell often developed, denticulation spread along one-third to half of hinge line, ventral process present, cardinal process small, erect, dorsal muscle field weakly impressed posteriorly, open anteriorly, weak dorsal myophragm.