Welcome to the Ammonoid subsite on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Karagandoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Goniatitida
Suborder:
Tornoceratina
Superfamily:
Karagandoceratoidea
Family:
Karagandoceratidae
Formal Genus Name and Reference:
Karagandoceras LIBROVICH, 1940, p. 88
Type Species:
K. galeatum LIBROVICH, 1940, p. 90, OD
Images
(Click to enlarge in a new window)
Fig. 6, 2a-c. *K. galeatum, holotype, Ak-Bas-tau Mountains, North Kazakhstan, middle Tournaisian, CNIGR 61/5450, a-b, side view, × 4, c, suture, × 3.3 (Librovich, 1940).
Synonyms
Geographic Distribution
Germany, lower Tournaisian, Kazakhstan (Karaganda), middle Tournaisian
Age Range
Beginning Stage in Treatise Usage:
Mississippian (lower Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Mississippian (middle Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
66
Ending Date:
351
Description
Conch form lenticular, involute, with acute ventral margin. Ventral lobe wide, its sides subparallel to divergent; height of saddles within ventral lobe variable, median part of ventral lobe relatively wide. Adventitious lobe very broad and deep, asymmetric. Lateral lobe centers on umbilical wall. Sutural formula: (E2 E1 E2 ) AL:UI [German], (V2 V1 V2 )LU:ID [Russian]. One species.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Goniatitida
Suborder:
Tornoceratina
Superfamily:
Karagandoceratoidea
Family:
Karagandoceratidae
Formal Genus Name and Reference:
Karagandoceras LIBROVICH, 1940, p. 88
Type Species:
K. galeatum LIBROVICH, 1940, p. 90, OD
Images
(Click to enlarge in a new window)
Fig. 6, 2a-c. *K. galeatum, holotype, Ak-Bas-tau Mountains, North Kazakhstan, middle Tournaisian, CNIGR 61/5450, a-b, side view, × 4, c, suture, × 3.3 (Librovich, 1940).
Synonyms
Geographic Distribution
Germany, lower Tournaisian, Kazakhstan (Karaganda), middle Tournaisian
Age Range
Beginning Stage in Treatise Usage:
Mississippian (lower Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Mississippian (middle Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
66
Ending Date:
351
Description
Conch form lenticular, involute, with acute ventral margin. Ventral lobe wide, its sides subparallel to divergent; height of saddles within ventral lobe variable, median part of ventral lobe relatively wide. Adventitious lobe very broad and deep, asymmetric. Lateral lobe centers on umbilical wall. Sutural formula: (E2 E1 E2 ) AL:UI [German], (V2 V1 V2 )LU:ID [Russian]. One species.