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Areostrophia
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Orthotetida
Superfamily:
Chilidiopsoidea
Family:
Areostrophiidae
Formal Genus Name and Reference:
Areostrophia HAVLÍČEK, 1965b, p. 293
Type Species:
Orthis distorta BARRANDE, 1879, p. 163, OD
Images
(Click to enlarge in a new window)
Fig. 489, 2a-e. *A. distorta (Barrande), Pragian, Bohemia, $a, b$, dorsal, ventral valve exteriors, x1.5$, c, posterodorsal view of internal mold, x1.5$, d, e, external, internal views of cardinalia, X3.5 (Havlíček, 1967).
Synonyms
Geographic Distribution
Czech Republic, Siberia
Age Range
Beginning Stage in Treatise Usage:
Upper Silurian
Beginning International Stage:
Gorstian
Fraction Up In Beginning Stage:
0
Beginning Date:
426.74
Ending Stage in Treatise Usage:
Lower Devonian
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Large, biconvex, subrounded, parvicostellate by intercalation with fila in interspaces, ventral interarea commonly high, apsacline, dorsal interarea lacking, cardinal process lobes discrete, with myophore slits directed posteroventrally and united with strong inner socket ridges by divergent concave socket ridges.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Orthotetida
Superfamily:
Chilidiopsoidea
Family:
Areostrophiidae
Formal Genus Name and Reference:
Areostrophia HAVLÍČEK, 1965b, p. 293
Type Species:
Orthis distorta BARRANDE, 1879, p. 163, OD
Images
(Click to enlarge in a new window)
Fig. 489, 2a-e. *A. distorta (Barrande), Pragian, Bohemia, $a, b$, dorsal, ventral valve exteriors, x1.5$, c, posterodorsal view of internal mold, x1.5$, d, e, external, internal views of cardinalia, X3.5 (Havlíček, 1967).
Synonyms
Geographic Distribution
Czech Republic, Siberia
Age Range
Beginning Stage in Treatise Usage:
Upper Silurian
Beginning International Stage:
Gorstian
Fraction Up In Beginning Stage:
0
Beginning Date:
426.74
Ending Stage in Treatise Usage:
Lower Devonian
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Large, biconvex, subrounded, parvicostellate by intercalation with fila in interspaces, ventral interarea commonly high, apsacline, dorsal interarea lacking, cardinal process lobes discrete, with myophore slits directed posteroventrally and united with strong inner socket ridges by divergent concave socket ridges.