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Psamminopelta
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Rzehakinidae
Formal Genus Name and Reference:
Psamminopelta Tappan, 1957, *1875, p. 211
Type Species:
P. bowsheri, OD
Images
(Click to enlarge in a new window)
Fig. 133,6. *P. bowsheri, side view of holotype, X62 (*2117)
Synonyms
Geographic Distribution
N.Am.(Alaska)
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:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Similar to Spirosigmoilinella but planispiral and evolute throughout and without any sigmoid development, aperture without tooth. [Differs from Rzehakina in being evolute and symmetrically planispiral in coiling.]
References
$\qquad$ Loeblich, A. R., Jr., \& Tappan, Helen, 1957, Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae, and Globotruncanidae: U.S. Natl. Museum, Bull. 215, p. 3-50, pl. 1-11, text-fig. 1-9.
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Rzehakinidae
Formal Genus Name and Reference:
Psamminopelta Tappan, 1957, *1875, p. 211
Type Species:
P. bowsheri, OD
Images
(Click to enlarge in a new window)
Fig. 133,6. *P. bowsheri, side view of holotype, X62 (*2117)
Synonyms
Geographic Distribution
N.Am.(Alaska)
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:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Similar to Spirosigmoilinella but planispiral and evolute throughout and without any sigmoid development, aperture without tooth. [Differs from Rzehakina in being evolute and symmetrically planispiral in coiling.]
References
$\qquad$ Loeblich, A. R., Jr., \& Tappan, Helen, 1957, Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae, and Globotruncanidae: U.S. Natl. Museum, Bull. 215, p. 3-50, pl. 1-11, text-fig. 1-9.