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Pseudocyclammina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Lituolidae
Subfamily:
Cyclamminae
Formal Genus Name and Reference:
Pseudocyclammina Yabe & Hanzawa, 1926, *2091, p. 10
Type Species:
Cyclammina lituus Yokoyama, 1890, *2096, p. 26, OD
Images
(Click to enlarge in a new window)
Fig. 145,4-6. *. Lituus (Yokoyama), U.Jur.(Kimmeridg.), Japan (5,6), U.Jur.(Kimmeridg.-Portland.), Pol. (4), 4, side view, *, median sec., *, equat. sec., * (all *1247).
Synonyms
Geographic Distribution
Japan, Eu., Carib., Malay Arch.(Sumatra)
Age Range
Beginning Stage in Treatise Usage:
U.Jur.
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
U.Cret.(Santon.)
Ending International Stage:
Santonian
Fraction Up In Ending Stage:
100
Ending Date:
83.65
Description
Test enrolled in early stage, later uncoiling as in Lituola, but with irregular reticulate outer layer and thick, conspicuous labyrinthic inner layer in both walls and septa, aperture cribrate, of numerous irregularly spaced openings on terminal face. [Differs from Lituola in its complex wall, and from Choffatella in its cribrate aperture, rather than vertical series of pores.]
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Lituolidae
Subfamily:
Cyclamminae
Formal Genus Name and Reference:
Pseudocyclammina Yabe & Hanzawa, 1926, *2091, p. 10
Type Species:
Cyclammina lituus Yokoyama, 1890, *2096, p. 26, OD
Images
(Click to enlarge in a new window)
Fig. 145,4-6. *. Lituus (Yokoyama), U.Jur.(Kimmeridg.), Japan (5,6), U.Jur.(Kimmeridg.-Portland.), Pol. (4), 4, side view, *, median sec., *, equat. sec., * (all *1247).
Synonyms
Geographic Distribution
Japan, Eu., Carib., Malay Arch.(Sumatra)
Age Range
Beginning Stage in Treatise Usage:
U.Jur.
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
U.Cret.(Santon.)
Ending International Stage:
Santonian
Fraction Up In Ending Stage:
100
Ending Date:
83.65
Description
Test enrolled in early stage, later uncoiling as in Lituola, but with irregular reticulate outer layer and thick, conspicuous labyrinthic inner layer in both walls and septa, aperture cribrate, of numerous irregularly spaced openings on terminal face. [Differs from Lituola in its complex wall, and from Choffatella in its cribrate aperture, rather than vertical series of pores.]