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Mesolobus
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Rugosochonetidae
Formal Genus Name and Reference:
Mesolobus Dunbar & CONDRA, 1932, p. 134
Type Species:
Chonetes mesolobus Norwood & PRATTEN, 1855b, p. 27, OD
Images
(Click to enlarge in a new window)
Fig. 267, 2a-e. *M. mesolobus (Norwood & Pratten), Missouri, $a, b$, ventral valves, $X_{2}$, $c$, dorsal valve interior, $X_{2}$, d, e, dorsal valve, interior, exterior, x2$ (Muir-Wood, 1962).
Synonyms
Geographic Distribution
North America
Age Range
Beginning Stage in Treatise Usage:
Upper Carboniferous
Beginning International Stage:
Bashkirian
Fraction Up In Beginning Stage:
0
Beginning Date:
323.4
Ending Stage in Treatise Usage:
Upper Carboniferous
Ending International Stage:
Gzhelian
Fraction Up In Ending Stage:
100
Ending Date:
298.89
Description
Small, valves moderately concavoconvex, normally with ventral sulcus bearing median fold, dorsal fold bearing median sulcus, pseudodeltidium, chilidium present, shell capillate or smooth, commonly lamellose, spines oblique, symmetrically arranged, dorsal median septum long, anteriorly elevated, serrated, inner socket ridges parallel to hinge
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Rugosochonetidae
Formal Genus Name and Reference:
Mesolobus Dunbar & CONDRA, 1932, p. 134
Type Species:
Chonetes mesolobus Norwood & PRATTEN, 1855b, p. 27, OD
Images
(Click to enlarge in a new window)
Fig. 267, 2a-e. *M. mesolobus (Norwood & Pratten), Missouri, $a, b$, ventral valves, $X_{2}$, $c$, dorsal valve interior, $X_{2}$, d, e, dorsal valve, interior, exterior, x2$ (Muir-Wood, 1962).
Synonyms
Geographic Distribution
North America
Age Range
Beginning Stage in Treatise Usage:
Upper Carboniferous
Beginning International Stage:
Bashkirian
Fraction Up In Beginning Stage:
0
Beginning Date:
323.4
Ending Stage in Treatise Usage:
Upper Carboniferous
Ending International Stage:
Gzhelian
Fraction Up In Ending Stage:
100
Ending Date:
298.89
Description
Small, valves moderately concavoconvex, normally with ventral sulcus bearing median fold, dorsal fold bearing median sulcus, pseudodeltidium, chilidium present, shell capillate or smooth, commonly lamellose, spines oblique, symmetrically arranged, dorsal median septum long, anteriorly elevated, serrated, inner socket ridges parallel to hinge