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Smoutina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Rotaliacea
Family:
Rotaliidae
Subfamily:
Rotaliinae
Formal Genus Name and Reference:
Smoutina DROOGER, 1960, *631b, p. 306
Type Species:
S. cruysi, OD
Images
(Click to enlarge in a new window)
Fig. 487,8-11. °S. cruysi, Paleoc., Fe. Guiana; 8a-c, opposite sides and edge view of holotype; 9, axial half sec. showing vert. canals of umbilical mass; 10a,b, horiz. half sees. near umbilical and spiral sides showing canal systems, double septa, and radial walls; 11, peripheral view of broken specimen showing intraseptal and vert. canals and nearly basal intercameral foramina; all X27 (*631b)
Synonyms
Geographic Distribution
S.Am.(Fr.Guiana)-W.Indies(Cuba)-USA(Fla.)
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
M.Eoc.
Ending International Stage:
Bartonian
Fraction Up In Ending Stage:
100
Ending Date:
37.71
Description
Test trochospiral, biconvex, simple spire visible on spiral side, opposite side with central umbilical filling occupying about half of test diameter, chambers communicating with spiral canals at their umbilical end; septa double, with fissures on umbilical side that connect with branching spiral canal system in umbilical mass, which contains vertical canals opening as pores at surface; wall lamellar, of radially built calcite, finely perforate; aperture of final chamber not described, intercameral foramen elongate. [Smoutina differs from Rotalia in having a Jess completely fissured umbilical mass, and from Kathina in having a spiral canal system.]
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Rotaliacea
Family:
Rotaliidae
Subfamily:
Rotaliinae
Formal Genus Name and Reference:
Smoutina DROOGER, 1960, *631b, p. 306
Type Species:
S. cruysi, OD
Images
(Click to enlarge in a new window)
Fig. 487,8-11. °S. cruysi, Paleoc., Fe. Guiana; 8a-c, opposite sides and edge view of holotype; 9, axial half sec. showing vert. canals of umbilical mass; 10a,b, horiz. half sees. near umbilical and spiral sides showing canal systems, double septa, and radial walls; 11, peripheral view of broken specimen showing intraseptal and vert. canals and nearly basal intercameral foramina; all X27 (*631b)
Synonyms
Geographic Distribution
S.Am.(Fr.Guiana)-W.Indies(Cuba)-USA(Fla.)
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
M.Eoc.
Ending International Stage:
Bartonian
Fraction Up In Ending Stage:
100
Ending Date:
37.71
Description
Test trochospiral, biconvex, simple spire visible on spiral side, opposite side with central umbilical filling occupying about half of test diameter, chambers communicating with spiral canals at their umbilical end; septa double, with fissures on umbilical side that connect with branching spiral canal system in umbilical mass, which contains vertical canals opening as pores at surface; wall lamellar, of radially built calcite, finely perforate; aperture of final chamber not described, intercameral foramen elongate. [Smoutina differs from Rotalia in having a Jess completely fissured umbilical mass, and from Kathina in having a spiral canal system.]