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Lissochonetes
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Rugosochonetidae
Formal Genus Name and Reference:
Lissochonetes Dunbar & CONDRA, 1932, p. 169
Type Species:
Chonetes geinitzianus Waagen, 1884, p. 621, OD, nom. nov. pro Chonetes glabra Geinitz, 1866, p. 60, non HALL, 1857, p. 117
Images
(Click to enlarge in a new window)
Fig. 274, 2a-c. *L. geinitzianus (Waagen), upper Pennsylvanian, Nebraska, $a$, ventral valve exterior, x3.5$, $b$, articulated shell, dorsal side, $X_{3}$, $c$, dorsal valve interior, $X_{3}$ (Dunbar & Condra, 1932).
Synonyms
Geographic Distribution
USA (Texas), Nebraska
Age Range
Beginning Stage in Treatise Usage:
Upper Carboniferous (Namurian)
Beginning International Stage:
Serpukhovian
Fraction Up In Beginning Stage:
0
Beginning Date:
330.34
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Shell transverse, slightly concavoconvex, weakly sulcate; spines orthomorph oblique (40°), symmetrically arranged; delicate dorsal valve internal structures with low, narrow median septum, or breviseptum, and anderidia not fusing posteriorly; cardinal process pit present.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Rugosochonetidae
Formal Genus Name and Reference:
Lissochonetes Dunbar & CONDRA, 1932, p. 169
Type Species:
Chonetes geinitzianus Waagen, 1884, p. 621, OD, nom. nov. pro Chonetes glabra Geinitz, 1866, p. 60, non HALL, 1857, p. 117
Images
(Click to enlarge in a new window)
Fig. 274, 2a-c. *L. geinitzianus (Waagen), upper Pennsylvanian, Nebraska, $a$, ventral valve exterior, x3.5$, $b$, articulated shell, dorsal side, $X_{3}$, $c$, dorsal valve interior, $X_{3}$ (Dunbar & Condra, 1932).
Synonyms
Geographic Distribution
USA (Texas), Nebraska
Age Range
Beginning Stage in Treatise Usage:
Upper Carboniferous (Namurian)
Beginning International Stage:
Serpukhovian
Fraction Up In Beginning Stage:
0
Beginning Date:
330.34
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Shell transverse, slightly concavoconvex, weakly sulcate; spines orthomorph oblique (40°), symmetrically arranged; delicate dorsal valve internal structures with low, narrow median septum, or breviseptum, and anderidia not fusing posteriorly; cardinal process pit present.