Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Conchidium
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Pentamerida
Superfamily:
Pentameroidea
Family:
Subrianidae
Formal Genus Name and Reference:
Conchidium OEHLERT, 1887a, p. 1311
Type Species:
Anomia bilocularis HISINGER, 1799, p. 285, OD
Images
(Click to enlarge in a new window)
Fig. 670, 1a-g. *C. bilocularis (Hisinger), Klinteberg Group, Klinteberget, Gotland, Sweden, $a-b$, dorsal, posterior views, x1, c$, ventral interior, x1.5$ (Schuchert & Cooper, 1932), d-e, lateral, ventral views, x1$ (Amsden, 1965), $f$, dorsal interior, x2, g$, cross section of dorsal shell, x6$ (Amsden, Boucot, & Johnson, 1967).
Synonyms
Geographic Distribution
Eurasia, North America
Age Range
Beginning Stage in Treatise Usage:
Silurian (upper Wenlock)
Beginning International Stage:
Homerian
Fraction Up In Beginning Stage:
50
Beginning Date:
428.68
Ending Stage in Treatise Usage:
Silurian (Ludlow)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
100
Ending Date:
422.73
Description
Medium, subcircular to elongate, costellate, commonly anteriorly bifurcating, unequally biconvex with ventral valve deeper, well-developed median septum and spondylium, outer hinge plates laterally inclined basally, inner hinge plates laterally inclined distally, crural bases variably projecting medially
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Pentamerida
Superfamily:
Pentameroidea
Family:
Subrianidae
Formal Genus Name and Reference:
Conchidium OEHLERT, 1887a, p. 1311
Type Species:
Anomia bilocularis HISINGER, 1799, p. 285, OD
Images
(Click to enlarge in a new window)
Fig. 670, 1a-g. *C. bilocularis (Hisinger), Klinteberg Group, Klinteberget, Gotland, Sweden, $a-b$, dorsal, posterior views, x1, c$, ventral interior, x1.5$ (Schuchert & Cooper, 1932), d-e, lateral, ventral views, x1$ (Amsden, 1965), $f$, dorsal interior, x2, g$, cross section of dorsal shell, x6$ (Amsden, Boucot, & Johnson, 1967).
Synonyms
Geographic Distribution
Eurasia, North America
Age Range
Beginning Stage in Treatise Usage:
Silurian (upper Wenlock)
Beginning International Stage:
Homerian
Fraction Up In Beginning Stage:
50
Beginning Date:
428.68
Ending Stage in Treatise Usage:
Silurian (Ludlow)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
100
Ending Date:
422.73
Description
Medium, subcircular to elongate, costellate, commonly anteriorly bifurcating, unequally biconvex with ventral valve deeper, well-developed median septum and spondylium, outer hinge plates laterally inclined basally, inner hinge plates laterally inclined distally, crural bases variably projecting medially