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Schistoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Goniatitida
Suborder:
Goniatitina
Superfamily:
Schistoceratoidea
Family:
Schistoceratidae
Formal Genus Name and Reference:
Schistoceras HYATT, 1884 in 1883-1884, p. 336
Type Species:
S. hyatti Smith, 1903, p. 108, SD Smith, 1903, p. 104, =Goniatites missouriensis Miller & Faber, 1892, p. 164, subj., fide Miller & FURNISH, 1940c, p. 538
Images
(Click to enlarge in a new window)
Fig. 65, 1a-c. *S. missouriense (Miller & Faber), a-b, Kansas City, Missouri, USA, Winterset Limestone, middle part of Missourian, X 1, c, suture, Jack County, Texas, USA, Graham Formation, Virgilian, SUI 14000, X 1 (Miller & Furnish, 1940c).-Fig. 65, 1d. S. diversecostatum Böse, cross section, upper part of Gaptank Formation, Virgilian, Texas, X 4 (Ruzhentsev, 1950).
Synonyms
Metaschistoceras
Geographic Distribution
Russia and Kazakhstan (South Urals), Slovenia (?Karawanken Mountains), Russia (Siberia), China (Ningxia), USA (Illinois, Iowa, Missouri, Ohio, Oklahoma, Pennsylvania, Texas)
Age Range
Beginning Stage in Treatise Usage:
Pennsylvanian (Kasimovian)
Beginning International Stage:
Kasimovian
Fraction Up In Beginning Stage:
0
Beginning Date:
307.02
Ending Stage in Treatise Usage:
Cisuralian (Sakmarian)
Ending International Stage:
Sakmarian
Fraction Up In Ending Stage:
100
Ending Date:
290.51
Description
Conch form moderately evolute to involute, with narrow umbilicus at maturity, Growth striae biconvex, longitudinal lirae present, but reticulate ornamentation inconspicuous, Shell surface smooth, without nodes
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Goniatitida
Suborder:
Goniatitina
Superfamily:
Schistoceratoidea
Family:
Schistoceratidae
Formal Genus Name and Reference:
Schistoceras HYATT, 1884 in 1883-1884, p. 336
Type Species:
S. hyatti Smith, 1903, p. 108, SD Smith, 1903, p. 104, =Goniatites missouriensis Miller & Faber, 1892, p. 164, subj., fide Miller & FURNISH, 1940c, p. 538
Images
(Click to enlarge in a new window)
Fig. 65, 1a-c. *S. missouriense (Miller & Faber), a-b, Kansas City, Missouri, USA, Winterset Limestone, middle part of Missourian, X 1, c, suture, Jack County, Texas, USA, Graham Formation, Virgilian, SUI 14000, X 1 (Miller & Furnish, 1940c).-Fig. 65, 1d. S. diversecostatum Böse, cross section, upper part of Gaptank Formation, Virgilian, Texas, X 4 (Ruzhentsev, 1950).
Synonyms
Metaschistoceras
Geographic Distribution
Russia and Kazakhstan (South Urals), Slovenia (?Karawanken Mountains), Russia (Siberia), China (Ningxia), USA (Illinois, Iowa, Missouri, Ohio, Oklahoma, Pennsylvania, Texas)
Age Range
Beginning Stage in Treatise Usage:
Pennsylvanian (Kasimovian)
Beginning International Stage:
Kasimovian
Fraction Up In Beginning Stage:
0
Beginning Date:
307.02
Ending Stage in Treatise Usage:
Cisuralian (Sakmarian)
Ending International Stage:
Sakmarian
Fraction Up In Ending Stage:
100
Ending Date:
290.51
Description
Conch form moderately evolute to involute, with narrow umbilicus at maturity, Growth striae biconvex, longitudinal lirae present, but reticulate ornamentation inconspicuous, Shell surface smooth, without nodes