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Neopronorites

Classification

    Phylum:  
Mollusca
    Class:  
Cephalopoda
    Order:  
Prolecanitida
    Superfamily:  
Medlicottioidea
    Family:  
Pronoritidae
    Formal Genus Name and Reference:  
Neopronorites RUZHENTSEV, 1936b, p. 1076
    Type Species:  
Parapronorites permicus CHERNOV, 1907, p. 344, OD


Images

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Fossil Image
Fig. 124, 1a-d. N. carboniferus Ruzhentsev, Gzhelian, Urals, a-b, × 1, c, hypotype, SUI 62485, northern Kazakhstan, Aidaralash, diameter at 31 mm (new, courtesy of D. M. Work & W. B. Saunders), d, diameter at 42 mm (Ruzhentsev, 1949a).--Fig. 124, 1e. N. tenuis (KarpinskiI), hypotype, SUI 84901, Asselian or Sakmarian, Sholak-Say, Southern Urals, diameter at 34 mm (new, courtesy of D. M. Work & W. B. Saunders).


Synonyms

Epipronorites


Geographic Distribution

Kazakhstan (Southern Urals), Russia (Urals, Verkhoian), Tajikistan (Pamir), China (Guangxi, Guizhou, Xinjiang, Xizang, Gansu), Indonesia (Timor), Thailand (Loei), USA (Texas), Canada (Ellesmere Island)


Age Range

    Beginning Stage in Treatise Usage:  
Pennsylvanian (Gzhelian)
    Beginning International Stage:  
Gzhelian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
303.68
    Ending Stage in Treatise Usage:  
Cisuralian (Kungurian)
    Ending International Stage:  
Kungurian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
274.37


Description

Neopronoritins characterized by irregular serration in prongs of mature external lateral lobe and one to three adjacent umbilical lobes. Dorsal and adjacent internal lobe bidentate. Seven or eight pairs of umbilically derived lobes in external suture, one-half as many internally. Sutural formula: (V2 V1 V2 )(L1 L1 )UU1 U2 U4 U6 U8 ..... U7 U5 U3 I(D1 D1 ) [Russian]. Fourteen named species. [No suitable illustrations of the type species are available.]




References



Museum or Author Information

Ruzhentsev, 1949