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Diplotremina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Discorbbacea
Family:
Discorbidae
Subfamily:
Discorbinae
Formal Genus Name and Reference:
Diplotremina KRISTAN-TOLLMAN, 1960, *1059, p. 64
Type Species:
D. astrofimbriata, OD
Images
(Click to enlarge in a new window)
Fig. 454,1. •D. astrofimbriata; 1a-c, opposite sides and edge view of holotype, X 125 (*1059)
Synonyms
Geographic Distribution
Aus.
Age Range
Beginning Stage in Treatise Usage:
M.Trias.
Beginning International Stage:
Anisian
Fraction Up In Beginning Stage:
0
Beginning Date:
246.7
Ending Stage in Treatise Usage:
M.Trias.
Ending International Stage:
Ladinian
Fraction Up In Ending Stage:
100
Ending Date:
237
Description
Test free, trochospiral, margin of large open umbilicus deeply lobed, chambers increasing gradually in size, wall calcareous, perforate, microstructure and lamellar character unknown; primary aperture interiomarginal, about midway between umbilicus and periphery, umbilical chamber flap separating it from secondary umbilical opening, both apertures with crenulated margins.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Discorbbacea
Family:
Discorbidae
Subfamily:
Discorbinae
Formal Genus Name and Reference:
Diplotremina KRISTAN-TOLLMAN, 1960, *1059, p. 64
Type Species:
D. astrofimbriata, OD
Images
(Click to enlarge in a new window)
Fig. 454,1. •D. astrofimbriata; 1a-c, opposite sides and edge view of holotype, X 125 (*1059)
Synonyms
Geographic Distribution
Aus.
Age Range
Beginning Stage in Treatise Usage:
M.Trias.
Beginning International Stage:
Anisian
Fraction Up In Beginning Stage:
0
Beginning Date:
246.7
Ending Stage in Treatise Usage:
M.Trias.
Ending International Stage:
Ladinian
Fraction Up In Ending Stage:
100
Ending Date:
237
Description
Test free, trochospiral, margin of large open umbilicus deeply lobed, chambers increasing gradually in size, wall calcareous, perforate, microstructure and lamellar character unknown; primary aperture interiomarginal, about midway between umbilicus and periphery, umbilical chamber flap separating it from secondary umbilical opening, both apertures with crenulated margins.