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Linderina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Orbitoidacea
Family:
Planorbulinidae
Formal Genus Name and Reference:
Linderina Schlumberger, 1893, *1656, p. 120
Type Species:
L. brugesi, OD (M)
Images
(Click to enlarge in a new window)
Fig. 562,5-10. *L. brugesi, U.Eoc., Fr.; 5, ext., X40, 6, horiz. sec., central part, showing perforations of umbonal thickening, X36; 7, equat. sec. showing stolon-like apertures, X135 (*1352); 8, horiz. sec. of early portion of megalospheric test showing biloculine embryo and later arched chambers, X75; 9,10, transv. secs. of microspheric and megalospheric tests showing equat. chambers and umbonal lamellar thickenings, X73 (*1656)
Synonyms
Geographic Distribution
Eu.-Afr.-N.Am.-E.Indies (Indon.)
Age Range
Beginning Stage in Treatise Usage:
Eoc.
Beginning International Stage:
Ypresian
Fraction Up In Beginning Stage:
0
Beginning Date:
56
Ending Stage in Treatise Usage:
Mio.
Ending International Stage:
Messinian
Fraction Up In Ending Stage:
100
Ending Date:
5.34
Description
Test discoidal, centrally thickened, 1-3.5 mm. diam., megalospheric form with biloculine embryonic stage, later chambers arched, in concentric series in single plane, those of successive series alternating in position, wall calcareous, perforate, umbonal lamellar thickening pronounced, surface with numerous granules or pillars in central area, apertures at each side of base of chambers, as in position of stolons in orbitoidids.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Orbitoidacea
Family:
Planorbulinidae
Formal Genus Name and Reference:
Linderina Schlumberger, 1893, *1656, p. 120
Type Species:
L. brugesi, OD (M)
Images
(Click to enlarge in a new window)
Fig. 562,5-10. *L. brugesi, U.Eoc., Fr.; 5, ext., X40, 6, horiz. sec., central part, showing perforations of umbonal thickening, X36; 7, equat. sec. showing stolon-like apertures, X135 (*1352); 8, horiz. sec. of early portion of megalospheric test showing biloculine embryo and later arched chambers, X75; 9,10, transv. secs. of microspheric and megalospheric tests showing equat. chambers and umbonal lamellar thickenings, X73 (*1656)
Synonyms
Geographic Distribution
Eu.-Afr.-N.Am.-E.Indies (Indon.)
Age Range
Beginning Stage in Treatise Usage:
Eoc.
Beginning International Stage:
Ypresian
Fraction Up In Beginning Stage:
0
Beginning Date:
56
Ending Stage in Treatise Usage:
Mio.
Ending International Stage:
Messinian
Fraction Up In Ending Stage:
100
Ending Date:
5.34
Description
Test discoidal, centrally thickened, 1-3.5 mm. diam., megalospheric form with biloculine embryonic stage, later chambers arched, in concentric series in single plane, those of successive series alternating in position, wall calcareous, perforate, umbonal lamellar thickening pronounced, surface with numerous granules or pillars in central area, apertures at each side of base of chambers, as in position of stolons in orbitoidids.