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Dyoros
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Productida
Suborder:
Chonetidina
Superfamily:
Chonetoidea
Family:
Rugosochonetidae
Subfamily:
Svalbardiinae
Formal Genus Name and Reference:
Dyoros Stehli, 1954, p. 312
Type Species:
Chonetes consaguineus GIRTY, 1929, p. 409, OD
Images
(Click to enlarge in a new window)
Fig. 272, 1a-c. *D. (D.) consanguineus (Girty), Bone Spring and Skinner Ranch Formations, Asselian, Texas, a, articulated shell, dorsal side, X2, b, ventral valve interior, X2, c, dorsal valve interior, x4 (Cooper & Grant, 1975).
Synonyms
Stauromata
Geographic Distribution
USA (Texas)
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (Sakmarian)
Beginning International Stage:
Sakmarian
Fraction Up In Beginning Stage:
0
Beginning Date:
293.52
Ending Stage in Treatise Usage:
Upper Permian (Kazanian)
Ending International Stage:
Roadian
Fraction Up In Ending Stage:
100
Ending Date:
269.21
Description
Wide-hinged smooth shells with sulcus varying from deep to barely visible, ventral valve interior, visceral region usually strongly fringed by spines on anterolateral side, Strong angular ears, deep ventral sulcus
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Productida
Suborder:
Chonetidina
Superfamily:
Chonetoidea
Family:
Rugosochonetidae
Subfamily:
Svalbardiinae
Formal Genus Name and Reference:
Dyoros Stehli, 1954, p. 312
Type Species:
Chonetes consaguineus GIRTY, 1929, p. 409, OD
Images
(Click to enlarge in a new window)
Fig. 272, 1a-c. *D. (D.) consanguineus (Girty), Bone Spring and Skinner Ranch Formations, Asselian, Texas, a, articulated shell, dorsal side, X2, b, ventral valve interior, X2, c, dorsal valve interior, x4 (Cooper & Grant, 1975).
Synonyms
Stauromata
Geographic Distribution
USA (Texas)
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (Sakmarian)
Beginning International Stage:
Sakmarian
Fraction Up In Beginning Stage:
0
Beginning Date:
293.52
Ending Stage in Treatise Usage:
Upper Permian (Kazanian)
Ending International Stage:
Roadian
Fraction Up In Ending Stage:
100
Ending Date:
269.21
Description
Wide-hinged smooth shells with sulcus varying from deep to barely visible, ventral valve interior, visceral region usually strongly fringed by spines on anterolateral side, Strong angular ears, deep ventral sulcus