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Nautiloculina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Miliolina
Superfamily:
Miliolacea
Family:
Fischerinidae
Subfamily:
Fischerininae
Formal Genus Name and Reference:
Nautiloculina MOHLER, 1938, *1297, p. 18
Type Species:
N. oolithica, OD
Images
(Click to enlarge in a new window)
Fig. 335,1-3. *N. oolithica, Raurac. ( 1,2 ), Sequan. (3), 1 , equat. sec., X75, 2 , equat. sec., central portion enlarged to show planispiral development, X230, 3, axial secs., X75 (*1297).
Synonyms
Geographic Distribution
Eu.(Switz.)
Age Range
Beginning Stage in Treatise Usage:
Jur.
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
Jur.
Ending International Stage:
Tithonian
Fraction Up In Ending Stage:
100
Ending Date:
143.1
Description
Test free, planispirally enrolled, with numerous chambers in each whorl, completely involute and bilaterally symmetrical, wall calcareous, imperforate, aperture crescentic equatorial interiomarginal slit. [Nautiloculina differs from Planispirinella in its robust rather than flattened form and basal slitlike aperture, instead of a high vertical slit in the apertural face.]
References
Mohler, Willi, 1938, Mikropaläontologische Untersuchungen in der nordschweizerischen Juraformation: Schweiz. Palaeont. Gesell., Abhandl., v. 60, p. 1-53, pl. 1-4, text-fig. 1-10.
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Miliolina
Superfamily:
Miliolacea
Family:
Fischerinidae
Subfamily:
Fischerininae
Formal Genus Name and Reference:
Nautiloculina MOHLER, 1938, *1297, p. 18
Type Species:
N. oolithica, OD
Images
(Click to enlarge in a new window)
Fig. 335,1-3. *N. oolithica, Raurac. ( 1,2 ), Sequan. (3), 1 , equat. sec., X75, 2 , equat. sec., central portion enlarged to show planispiral development, X230, 3, axial secs., X75 (*1297).
Synonyms
Geographic Distribution
Eu.(Switz.)
Age Range
Beginning Stage in Treatise Usage:
Jur.
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
Jur.
Ending International Stage:
Tithonian
Fraction Up In Ending Stage:
100
Ending Date:
143.1
Description
Test free, planispirally enrolled, with numerous chambers in each whorl, completely involute and bilaterally symmetrical, wall calcareous, imperforate, aperture crescentic equatorial interiomarginal slit. [Nautiloculina differs from Planispirinella in its robust rather than flattened form and basal slitlike aperture, instead of a high vertical slit in the apertural face.]
References
Mohler, Willi, 1938, Mikropaläontologische Untersuchungen in der nordschweizerischen Juraformation: Schweiz. Palaeont. Gesell., Abhandl., v. 60, p. 1-53, pl. 1-4, text-fig. 1-10.