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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
(Click to enlarge in a new window)
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
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
(Click to enlarge in a new window)
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.