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Atopochara
Classification
Phylum:
Charophyta
Class:
Charophyceae
Order:
Charales
Superfamily:
Unknown
Family:
Clavatoraceae
Formal Genus Name and Reference:
Atopochara Реск, 1938, p. 173, emend., РЕСК, 1941, p. 289
Type Species:
A. trivolvis РЕСК, 1938, p. 174, pl. 28, 812, text-fig. 1, OD
Images
(Click to enlarge in a new window)
Fig. 58, 1a-c. * A. trivolvis Реск, Aptian, North America, a, holotype, lateral view, x33 (Peck, 1938, pl. 28,12), b-c, topotype, basal view, apical view, x40 (Grambast, 1968, pl. III, 16b, 1c)., Fig. 58,1d-e. A. triquetra (Grambast) Feist, Lower Cretaceous, Spain, d, paratype, lateral view, e, paratype, basal view, x50 (Grambast, 1968, pl. II, 13a, 12b)., Fig. 58,1f. A. multivolvis Реск, Cenomanian, southern France, lateral view, x35 (Feist, 1981, fig. 1f)., FIG. 58, 1 (~g}-(h}. A. trivolvis PЕСК, interpretations of cellular structure of utricle (white, antheridia) (Grambast, 1967, fig. d,f).
Synonyms
Geographic Distribution
Cretaceous: worldwide
Age Range
Beginning Stage in Treatise Usage:
Cretaceous
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cretaceous
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
0
Ending Date:
66.04
Description
Utricle composed of 3 equivalent groups of units, each group composed of 3 short vertical units originating near basal opening and ending near equator, 2 to 5 small units grouped on or near equator and several sinistrally spiralled units extending distally from equator to apex, Gyrogonite thin walled, fragile
References
Museum or Author Information
Classification
Phylum:
Charophyta
Class:
Charophyceae
Order:
Charales
Superfamily:
Unknown
Family:
Clavatoraceae
Formal Genus Name and Reference:
Atopochara Реск, 1938, p. 173, emend., РЕСК, 1941, p. 289
Type Species:
A. trivolvis РЕСК, 1938, p. 174, pl. 28, 812, text-fig. 1, OD
Images
(Click to enlarge in a new window)
Fig. 58, 1a-c. * A. trivolvis Реск, Aptian, North America, a, holotype, lateral view, x33 (Peck, 1938, pl. 28,12), b-c, topotype, basal view, apical view, x40 (Grambast, 1968, pl. III, 16b, 1c)., Fig. 58,1d-e. A. triquetra (Grambast) Feist, Lower Cretaceous, Spain, d, paratype, lateral view, e, paratype, basal view, x50 (Grambast, 1968, pl. II, 13a, 12b)., Fig. 58,1f. A. multivolvis Реск, Cenomanian, southern France, lateral view, x35 (Feist, 1981, fig. 1f)., FIG. 58, 1 (~g}-(h}. A. trivolvis PЕСК, interpretations of cellular structure of utricle (white, antheridia) (Grambast, 1967, fig. d,f).
Synonyms
Geographic Distribution
Cretaceous: worldwide
Age Range
Beginning Stage in Treatise Usage:
Cretaceous
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cretaceous
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
0
Ending Date:
66.04
Description
Utricle composed of 3 equivalent groups of units, each group composed of 3 short vertical units originating near basal opening and ending near equator, 2 to 5 small units grouped on or near equator and several sinistrally spiralled units extending distally from equator to apex, Gyrogonite thin walled, fragile