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Nemegtichara

Classification

    Phylum:  
Charophyta
    Class:  
Charophyceae
    Order:  
Charales
    Superfamily:  
Unknown
    Family:  
Characeae
    Formal Genus Name and Reference:  
Nemegtichara Karczewska & ZIEMBIŃSKA-TWORZYDŁO, 1972, p. 54
    Type Species:  
N. prima Karczewska & ZIEMBIŃSKA-TWORZYDĿO, 1972, p. 54, pl. 7, OD


Images

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Fossil Image
Fig. 69, 1a-c. { }^{*} N. prima Karczewska & Ziembińska-Tworzydło, Paleocene, Gobi desert, a, holotype, lateral view, b, apical view, c, basal view, x70 (Karczewska & Ziembińska-Tworzydło, 1972, pl. VII,3b,3a,3c).


Synonyms



Geographic Distribution

China, Mongolia, India


Age Range

    Beginning Stage in Treatise Usage:  
Upper Cretaceous, Paleogene (?Paleocene)
    Beginning International Stage:  
Danian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
66.04
    Ending Stage in Treatise Usage:  
Paleogene (?Paleocene)
    Ending International Stage:  
Thanetian
    Fraction Up In Ending Stage:  
0
    Ending Date:  
56


Description

Apex lamprothamnoid, with shallow periapical depression, in apex center, spirals thin and turn up, forming conical protuberance. General shape variable, oblate-spheroidal to prolate, apex pointed and base rounded or truncated. Spirals generally unornamented, however, some species have thick, intercellular, prominent ridges. Basal plate twice as wide as high, generally visible from exterior. Size small.




References



Museum or Author Information

Karczewska & Ziembińska-Tworzydło, 1972