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Quadrimorphina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Cassidulinacea
Family:
Nonionidae
Subfamily:
Chilostomellinae
Formal Genus Name and Reference:
Quadrimorphina FINLAY, 1939, *717c, p. 325
Type Species:
Valvulina allomorphinoides REUSS, 1860, *1548, p. 223; aD
Images
(Click to enlarge in a new window)
Fig. 611,5. Q. ruckerae (TAPPAN), L.Cret.(Alb.), Alaska; 5a-c, opposite sides and edge view of paratype, X75 (*1875). -- FIig. 611,6. *Q. allomorphinoides (REUSS), U.Cret., USA(Tenn.); 6a-c, opposite sides and edge view, X176 (*2117)
Synonyms
Geographic Distribution
Eu.-N.Am.-N.Z.
Age Range
Beginning Stage in Treatise Usage:
L.Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test trochospiul, periphery rounded, all chambers visible on spiral side. commonly 3 or 4 chambers in final whorl; wall calcareous, finely perforate, granular in structure, surface smooth; aperture interiomarginal, umbilical or extraumbilical in position and partially covered by projecting umbilical flap.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Cassidulinacea
Family:
Nonionidae
Subfamily:
Chilostomellinae
Formal Genus Name and Reference:
Quadrimorphina FINLAY, 1939, *717c, p. 325
Type Species:
Valvulina allomorphinoides REUSS, 1860, *1548, p. 223; aD
Images
(Click to enlarge in a new window)
Fig. 611,5. Q. ruckerae (TAPPAN), L.Cret.(Alb.), Alaska; 5a-c, opposite sides and edge view of paratype, X75 (*1875). -- FIig. 611,6. *Q. allomorphinoides (REUSS), U.Cret., USA(Tenn.); 6a-c, opposite sides and edge view, X176 (*2117)
Synonyms
Geographic Distribution
Eu.-N.Am.-N.Z.
Age Range
Beginning Stage in Treatise Usage:
L.Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test trochospiul, periphery rounded, all chambers visible on spiral side. commonly 3 or 4 chambers in final whorl; wall calcareous, finely perforate, granular in structure, surface smooth; aperture interiomarginal, umbilical or extraumbilical in position and partially covered by projecting umbilical flap.