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Chiloguembelina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Heterohelicidae
Subfamily:
Heterohelicinae
Formal Genus Name and Reference:
Chiloguembelina Loeblich & TAPPAN, 1956, *1168, p. 340
Type Species:
Gümbelina midwayensis CUSHMAN, 1940, *475, p. 65, OD
Images
(Click to enlarge in a new window)
Fig. 523,8. C. crinita (GLAESSNER), Paleoc. (Vincentown), USA (N.J.); 8a-c, side, edge, and top views, X143 (*1174). -- Fig. 523,9. °C. midwayensis (CUSH- MAN), Paleoc.(Midway.), USA(Tex.); 9a,b, side, edge views, X97 (°1174)
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Paleoc.
Beginning International Stage:
Danian
Fraction Up In Beginning Stage:
0
Beginning Date:
66.04
Ending Stage in Treatise Usage:
Oligo.
Ending International Stage:
Chattian
Fraction Up In Ending Stage:
100
Ending Date:
23.04
Description
Test free, flaring, inflated chambers biserially arranged, with tendency to become somewhat twisted, sutures distinct, depressed, wall calcareous, finely perforate, radial in structure, surface smooth to hispid, aperture a broad, low arch bordered by produced necklike extension of chamber, commonly forming more strongly developed flap at one side so that aperture appears to be directed toward one of flat sides of test.
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:
Chiloguembelina Loeblich & TAPPAN, 1956, *1168, p. 340
Type Species:
Gümbelina midwayensis CUSHMAN, 1940, *475, p. 65, OD
Images
(Click to enlarge in a new window)
Fig. 523,8. C. crinita (GLAESSNER), Paleoc. (Vincentown), USA (N.J.); 8a-c, side, edge, and top views, X143 (*1174). -- Fig. 523,9. °C. midwayensis (CUSH- MAN), Paleoc.(Midway.), USA(Tex.); 9a,b, side, edge views, X97 (°1174)
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Paleoc.
Beginning International Stage:
Danian
Fraction Up In Beginning Stage:
0
Beginning Date:
66.04
Ending Stage in Treatise Usage:
Oligo.
Ending International Stage:
Chattian
Fraction Up In Ending Stage:
100
Ending Date:
23.04
Description
Test free, flaring, inflated chambers biserially arranged, with tendency to become somewhat twisted, sutures distinct, depressed, wall calcareous, finely perforate, radial in structure, surface smooth to hispid, aperture a broad, low arch bordered by produced necklike extension of chamber, commonly forming more strongly developed flap at one side so that aperture appears to be directed toward one of flat sides of test.