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Kazakhstania
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Goniatitida
Suborder:
Tornoceratina
Superfamily:
Prionoceratoidea
Family:
Gattendorfiidae
Formal Genus Name and Reference:
Kazakhstania LIBROVICH, 1940, p. 67
Type Species:
Gattendorfia (Kazakhstania) karagandaensis LIBROVICH, 1940, p. 68, OD
Images
(Click to enlarge in a new window)
Fig. 4, 1 a-b .* K. karagandaensis, holotype, Ak-Bas-tau Mountains, North Kazakhstan, middle Tournaisian, CNIGR 48/5450, a, X 1, b, suture, whorl height at 9 mm , X 3.4 (Librovich, 1940)"
Synonyms
Geographic Distribution
Great Britain, Kazakhstan (Karaganda), Mongolia, USA (Arkansas, Indiana, Michigan, Ohio, Kentucky)
Age Range
Beginning Stage in Treatise Usage:
Mississippian (middle Tournaisian-upper Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
33
Beginning Date:
355.15
Ending Stage in Treatise Usage:
Mississippian (middle Tournaisian-upper Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Conch thin-discoidal, on all growth stages evolute, with wide umbilicus. Growth lines fine or coarse, several constrictions in most species. Ventral lobe long, slightly bell shaped, adorally narrowed.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Goniatitida
Suborder:
Tornoceratina
Superfamily:
Prionoceratoidea
Family:
Gattendorfiidae
Formal Genus Name and Reference:
Kazakhstania LIBROVICH, 1940, p. 67
Type Species:
Gattendorfia (Kazakhstania) karagandaensis LIBROVICH, 1940, p. 68, OD
Images
(Click to enlarge in a new window)
Fig. 4, 1 a-b .* K. karagandaensis, holotype, Ak-Bas-tau Mountains, North Kazakhstan, middle Tournaisian, CNIGR 48/5450, a, X 1, b, suture, whorl height at 9 mm , X 3.4 (Librovich, 1940)"
Synonyms
Geographic Distribution
Great Britain, Kazakhstan (Karaganda), Mongolia, USA (Arkansas, Indiana, Michigan, Ohio, Kentucky)
Age Range
Beginning Stage in Treatise Usage:
Mississippian (middle Tournaisian-upper Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
33
Beginning Date:
355.15
Ending Stage in Treatise Usage:
Mississippian (middle Tournaisian-upper Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Conch thin-discoidal, on all growth stages evolute, with wide umbilicus. Growth lines fine or coarse, several constrictions in most species. Ventral lobe long, slightly bell shaped, adorally narrowed.