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Fissoelphidium
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Rotaliacea
Family:
Rotaliidae
Subfamily:
Cuvillierininae
Formal Genus Name and Reference:
Fissoelphidium Smout, 1955, *1804, p. 208
Type Species:
F. operculiferum, OD
Images
(Click to enlarge in a new window)
Fig. 490,5; 491,1-3. *F. operculiferum, Qatar Penin; 490,5a,b, side and edge views showing fissured umbilical mass, dendritic fissured sutures, and perforated apertural plate, X28 (*2117), Fig. 491,1, edge view showing intercameral slitlike foramen, 491,2, axial sec. showing umbilical thickening, 491,3, equat. sec. showing double septa, all X30 (*1804)
Synonyms
Geographic Distribution
Asia(Arabia-Iraq)
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Maastricht.)
Beginning International Stage:
Maastrichtian
Fraction Up In Beginning Stage:
0
Beginning Date:
72.17
Ending Stage in Treatise Usage:
U.Cret.(Maastricht.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test planispiral, bilaterally symmetrical, chambers numerous, septa double and sutures fissured in dendritic pattern, umbilical region with fissured umbilical mass, wall calcareous, lamellar and radially fibrous, perforate; aperture a series of pores in somewhat protruding apertural plate In interiomarginal position, plate being resorbed when next chamber forms, leaving equatorial interiomarginal slitlike
foramen.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Rotaliacea
Family:
Rotaliidae
Subfamily:
Cuvillierininae
Formal Genus Name and Reference:
Fissoelphidium Smout, 1955, *1804, p. 208
Type Species:
F. operculiferum, OD
Images
(Click to enlarge in a new window)
Fig. 490,5; 491,1-3. *F. operculiferum, Qatar Penin; 490,5a,b, side and edge views showing fissured umbilical mass, dendritic fissured sutures, and perforated apertural plate, X28 (*2117), Fig. 491,1, edge view showing intercameral slitlike foramen, 491,2, axial sec. showing umbilical thickening, 491,3, equat. sec. showing double septa, all X30 (*1804)
Synonyms
Geographic Distribution
Asia(Arabia-Iraq)
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Maastricht.)
Beginning International Stage:
Maastrichtian
Fraction Up In Beginning Stage:
0
Beginning Date:
72.17
Ending Stage in Treatise Usage:
U.Cret.(Maastricht.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test planispiral, bilaterally symmetrical, chambers numerous, septa double and sutures fissured in dendritic pattern, umbilical region with fissured umbilical mass, wall calcareous, lamellar and radially fibrous, perforate; aperture a series of pores in somewhat protruding apertural plate In interiomarginal position, plate being resorbed when next chamber forms, leaving equatorial interiomarginal slitlike
foramen.