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Racemiguembelina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Heterohelicidae
Subfamily:
Heterohelicinae
Formal Genus Name and Reference:
Racemiguembelina Montanaro GALLITELLI, 1957, *1303, p. 142
Type Species:
Gümbelina fructicosa EGGER, 1899, *659, p. 35, OD
Images
(Click to enlarge in a new window)
Fig. 525,8. *R. fructicosa (EGGER), Senon., USA(Tex.); 8a,b, side, top views, X116 (*1303).
Synonyms
Geographic Distribution
Eu.- N.Am.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test subconical, early stage may be planispiral in microspheric forms, later biserial with globular chambers increasing regularly in size and with proliferation at crown perpendicular to previous axis of growth, surface may be ornamented by longitudinal striae or costae; aperture an interiomarginal arch on one or many of terminal chambers.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Heterohelicidae
Subfamily:
Heterohelicinae
Formal Genus Name and Reference:
Racemiguembelina Montanaro GALLITELLI, 1957, *1303, p. 142
Type Species:
Gümbelina fructicosa EGGER, 1899, *659, p. 35, OD
Images
(Click to enlarge in a new window)
Fig. 525,8. *R. fructicosa (EGGER), Senon., USA(Tex.); 8a,b, side, top views, X116 (*1303).
Synonyms
Geographic Distribution
Eu.- N.Am.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test subconical, early stage may be planispiral in microspheric forms, later biserial with globular chambers increasing regularly in size and with proliferation at crown perpendicular to previous axis of growth, surface may be ornamented by longitudinal striae or costae; aperture an interiomarginal arch on one or many of terminal chambers.