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Iridistrophia
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Orthotetida
Superfamily:
Chilidiopsoidea
Family:
Chilidiopsidae
Formal Genus Name and Reference:
Iridistrophia HAVLÍČEK, 1965b, p. 292
Type Species:
Orthis umbella BARRANDE, 1848, p. 206, OD
Images
(Click to enlarge in a new window)
Fig. 485, 3a-d. *I. umbella (Barrande), Emsian, Bohemia, $a$, ventral valve exterior, X1.8, $b, c$, internal mold of ventral valve, dorsal valve exterior, x1.5$, d, internal view of cardinalia, X4 (Havlíček, 1967).
Synonyms
Hinganella, Magicostrophia
Geographic Distribution
Europe, China, Argentina, upper Silurian (Ludlow)-Lower Devonian (Emsian); China, Upper Ordovician
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician
Beginning International Stage:
Sandbian
Fraction Up In Beginning Stage:
0
Beginning Date:
458.18
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Large, semioval, resupinate, parvicostellate with fila in interspaces, pseudodeltidium convex, chilidium reduced or vestigal, dorsal interarea rudimentary, dental plates, long, divergent, basal median node between welldeveloped cardinal process lobes, concave socket ridges parallel with hinge line, muscle scars indistinct.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Orthotetida
Superfamily:
Chilidiopsoidea
Family:
Chilidiopsidae
Formal Genus Name and Reference:
Iridistrophia HAVLÍČEK, 1965b, p. 292
Type Species:
Orthis umbella BARRANDE, 1848, p. 206, OD
Images
(Click to enlarge in a new window)
Fig. 485, 3a-d. *I. umbella (Barrande), Emsian, Bohemia, $a$, ventral valve exterior, X1.8, $b, c$, internal mold of ventral valve, dorsal valve exterior, x1.5$, d, internal view of cardinalia, X4 (Havlíček, 1967).
Synonyms
Hinganella, Magicostrophia
Geographic Distribution
Europe, China, Argentina, upper Silurian (Ludlow)-Lower Devonian (Emsian); China, Upper Ordovician
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician
Beginning International Stage:
Sandbian
Fraction Up In Beginning Stage:
0
Beginning Date:
458.18
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Large, semioval, resupinate, parvicostellate with fila in interspaces, pseudodeltidium convex, chilidium reduced or vestigal, dorsal interarea rudimentary, dental plates, long, divergent, basal median node between welldeveloped cardinal process lobes, concave socket ridges parallel with hinge line, muscle scars indistinct.