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Microchara

Classification

    Phylum:  
Charophyta
    Class:  
Charophyceae
    Order:  
Charales
    Superfamily:  
Unknown
    Family:  
Characeae
    Formal Genus Name and Reference:  
Microchara Grambast, 1959b, p. 6, Gobichara Karczewska & ZIEMBIŃSKA-TWORZYDŁO, 1972, p. 72
    Type Species:  
M. hystrix GRAMBAST, 1959b, p. 7, fig. 1, OD


Images

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Fossil Image
Fig. 69,2a-d. * M. hystrix Grambast, lower Eocene, France, a, holotype, lateral view, C.63-4, x80, b, apical view, C.2-4, x110, c, basal view, C.63-7, x80, d, basal plate, C.63-8, x660 (new).——Fig. 69,2e-f. M. vestita Castel, lower Eocene, France, e, lateral view of specimen, tunicate in upper part around site of missing coronula cells, x124, f, apical view, with remains of 3 coronula cells, x105 (Feist-Castel, 1975, pl. II, 11,10 )


Synonyms

Gobichara


Geographic Distribution

Argentina, France, Spain, China, Mongolia, India


Age Range

    Beginning Stage in Treatise Usage:  
Upper Cretaceous-Paleogene (middle Eocene)
    Beginning International Stage:  
Lutetian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
48.07
    Ending Stage in Treatise Usage:  
Paleogene (middle Eocene)
    Ending International Stage:  
Bartonian
    Fraction Up In Ending Stage:  
0
    Ending Date:  
37.71


Description

Apex psilocharoid, with little or no modification, General shape subprolate, with apex rounded and base narrowed, in some species base projecting, Gyrogonites often with tubercles or crests, ornamentation reaching apex center, Basal plate very thin, not visible from exterior, Size generally small, in some species small to medium. [ Gyrogonites of Microchara with tapered bases are difficult to distinguish from small specimens of Harrisichara. These resemblances may indicate a phylogenetic relationship between the two genera..]




References



Museum or Author Information

Feist-Castel, 1975