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Spirocyclina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Lituolidae
Subfamily:
Spirocyclininae
Formal Genus Name and Reference:
Spirocyclina MUNIER-CHALMAS, 1887, *1325, p. xxxi
Type Species:
S. choffati, OD
Images
(Click to enlarge in a new window)
Fig. 146,1,2. *S. choffati, la-c, opposite sides and edge of lectotype (designated by Maync, *1247), showing double row of apertural pores, X17 (*2117), 2, sectioned specimen, X14 (*1247).
Synonyms
Geographic Distribution
Eu.(Fr.)
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Senon.)
Beginning International Stage:
Coniacian
Fraction Up In Beginning Stage:
0
Beginning Date:
89.39
Ending Stage in Treatise Usage:
U.Cret.(Senon.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test free, coiled, large, slightly trochospiral, nearly involute, chambers broad, low, increasing rapidly in breadth, subdivided internally by numerous transverse radial partitions beneath alveolar layer, forming secondary chamberlets which show at surface as reticulations when specimen is dampened, wall agglutinated, fine-grained, with much cement, aperture consisting of 2 vertical rows of pores in slight depression at either side of apertural face
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Lituolidae
Subfamily:
Spirocyclininae
Formal Genus Name and Reference:
Spirocyclina MUNIER-CHALMAS, 1887, *1325, p. xxxi
Type Species:
S. choffati, OD
Images
(Click to enlarge in a new window)
Fig. 146,1,2. *S. choffati, la-c, opposite sides and edge of lectotype (designated by Maync, *1247), showing double row of apertural pores, X17 (*2117), 2, sectioned specimen, X14 (*1247).
Synonyms
Geographic Distribution
Eu.(Fr.)
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Senon.)
Beginning International Stage:
Coniacian
Fraction Up In Beginning Stage:
0
Beginning Date:
89.39
Ending Stage in Treatise Usage:
U.Cret.(Senon.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test free, coiled, large, slightly trochospiral, nearly involute, chambers broad, low, increasing rapidly in breadth, subdivided internally by numerous transverse radial partitions beneath alveolar layer, forming secondary chamberlets which show at surface as reticulations when specimen is dampened, wall agglutinated, fine-grained, with much cement, aperture consisting of 2 vertical rows of pores in slight depression at either side of apertural face