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Epitomyonia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Dalmanelloidea
Family:
Dicoelosiidae
Formal Genus Name and Reference:
Epitomyonia WRIGHT, 1968b, p. 128
Type Species:
E. glypha, OD
Images
(Click to enlarge in a new window)
Fig. 579, 2a-g. * E. glypha, a-e, posterior, anterior, dorsal, lateral, ventral views of conjoined pair, $X_{6}, f, g$, normal, oblique views of dorsal interior, x6$ (Wright, 1968b).
Synonyms
Geographic Distribution
Baltic, Bohemia, Britain, Italy, North America, Spain, Scandinavia, central Asia
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Ashgill)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
66.7
Beginning Date:
447.72
Ending Stage in Treatise Usage:
upper Silurian (Ludlow)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
100
Ending Date:
422.73
Description
"Bilobed, multicostellate valves with long, curved ventral interarea, ventral muscle scar cordate, cardinalia with lobate myophore and shaft continuous with high dorsal median septum extending almost to anterior margin, bisecting dorsal platform, fulcral plates absent."
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Dalmanelloidea
Family:
Dicoelosiidae
Formal Genus Name and Reference:
Epitomyonia WRIGHT, 1968b, p. 128
Type Species:
E. glypha, OD
Images
(Click to enlarge in a new window)
Fig. 579, 2a-g. * E. glypha, a-e, posterior, anterior, dorsal, lateral, ventral views of conjoined pair, $X_{6}, f, g$, normal, oblique views of dorsal interior, x6$ (Wright, 1968b).
Synonyms
Geographic Distribution
Baltic, Bohemia, Britain, Italy, North America, Spain, Scandinavia, central Asia
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Ashgill)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
66.7
Beginning Date:
447.72
Ending Stage in Treatise Usage:
upper Silurian (Ludlow)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
100
Ending Date:
422.73
Description
"Bilobed, multicostellate valves with long, curved ventral interarea, ventral muscle scar cordate, cardinalia with lobate myophore and shaft continuous with high dorsal median septum extending almost to anterior margin, bisecting dorsal platform, fulcral plates absent."