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Nonionellina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Cassidulinacea
Family:
Nonionidae
Subfamily:
Nonioninae
Formal Genus Name and Reference:
Nonionellina VOLOSHINOVA, 1958, *2019, p. 142
Type Species:
Nonionina labradorica J. W. DAWSON, 1860, *566, p. 191; OD
Images
(Click to enlarge in a new window)
Fig. 613,2-5. *N. labradorica 0. W. DAWSON), Rec., Alaska (2), Sea of Okhotsk (3-5); 2a,b, side, edge views, X36 (*1162); 3a-e, opp. sides and edge view of juvenile specimen showing asymmetry; 4a-c, some- what older, more symmetrical specimen; 5a,b, nearly adult specimen; 3-5, X50 (*2019)
Synonyms
Geographic Distribution
Eu.-N.Am.-Ati. O.-Japan-Pac. O,
Age Range
Beginning Stage in Treatise Usage:
Mio.
Beginning International Stage:
Aquitanian
Fraction Up In Beginning Stage:
0
Beginning Date:
23.04
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, trochospiral in early coiling, later becoming planispiral and involute; chambers enlarging rapidly around deep umbilicus; wall calcareous, finely perforate, granular in structure; aperture a low slit at base of apertural face. [Nonionellina is like Nonionella in the juvenile stages and like Nonion in the adult.]
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Cassidulinacea
Family:
Nonionidae
Subfamily:
Nonioninae
Formal Genus Name and Reference:
Nonionellina VOLOSHINOVA, 1958, *2019, p. 142
Type Species:
Nonionina labradorica J. W. DAWSON, 1860, *566, p. 191; OD
Images
(Click to enlarge in a new window)
Fig. 613,2-5. *N. labradorica 0. W. DAWSON), Rec., Alaska (2), Sea of Okhotsk (3-5); 2a,b, side, edge views, X36 (*1162); 3a-e, opp. sides and edge view of juvenile specimen showing asymmetry; 4a-c, some- what older, more symmetrical specimen; 5a,b, nearly adult specimen; 3-5, X50 (*2019)
Synonyms
Geographic Distribution
Eu.-N.Am.-Ati. O.-Japan-Pac. O,
Age Range
Beginning Stage in Treatise Usage:
Mio.
Beginning International Stage:
Aquitanian
Fraction Up In Beginning Stage:
0
Beginning Date:
23.04
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, trochospiral in early coiling, later becoming planispiral and involute; chambers enlarging rapidly around deep umbilicus; wall calcareous, finely perforate, granular in structure; aperture a low slit at base of apertural face. [Nonionellina is like Nonionella in the juvenile stages and like Nonion in the adult.]