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Epistomina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Robertinacea
Family:
Ceratobuliminidae
Subfamily:
Epistomininae
Formal Genus Name and Reference:
Epistomina Terquem, 1883, *1892, p. 37
Type Species:
E. regularis Terquem, 1883, *1891, p. 379 (=E. mosquensis Uhlig, 1883, *1962, p. 766), SD Galloway & WISSLER, 1927, *766, p. 60
Images
(Click to enlarge in a new window)
Fig. 634,1,2. *E. regularis, M.Jur.(Bajoc.), Fr. (1), M.Jur.(Dogger - gamma), Eu.(Aus.) (2), 1a-c, opp. sides and edge of holotype, X40 (*700); 2a-c, opp. sides and edge of holotype of E. mosquensis Uhlig, X72 (*1332). -- Fig. 634,3-5. E. spinulifera (Reuss), L.Cret.(Alb.), Eu.(Neth.), 3a-c, opp. sides and edge, X50 (*555); 4, horiz. sec. seen from umbilical side, showing internal partition, X36; 5 , axial sec. through chamber to show septal foramen (f), and internal partition (p), X195 (*943). -- Fig. 634,6. E. terquemi (Antonova), M.Jur. (Bajoc.), USSR(Caucasus), 6a-c, opp. sides and edge view, X80 (*24). -- Fig. 634,7. E. tentlicostata BARTENSTEIN & BRAND, L.Cret.(Valangin.), N.Ger.; 7a-c, opp. sides and edge view of holo- type, X65 (*95)
Synonyms
Brotzenia
Geographic Distribution
Eu.-N.Am.-Afr.
Age Range
Beginning Stage in Treatise Usage:
Trias., M.Jur.
Beginning International Stage:
Aalenian
Fraction Up In Beginning Stage:
0
Beginning Date:
174.7
Ending Stage in Treatise Usage:
L.Cret.
Ending International Stage:
Albian
Fraction Up In Ending Stage:
100
Ending Date:
100.5
Description
Test lenticular, trochospiral, periphery angular to carinate, umbilical area closed, internal partition crossing chamber cavity from outer margin of lateromarginal apertural opening parallel to periphery on umbilical side, extending nearly or completely to wall against previous whorl, sutures thickened, may be elevated, oblique areal oval aperture on umbilical side, later remaining as interseptal foramen, and additional lateromarginal opening paralleling periphery on umbilical side, in earlier chambers secondarily closed by shell material
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Robertinacea
Family:
Ceratobuliminidae
Subfamily:
Epistomininae
Formal Genus Name and Reference:
Epistomina Terquem, 1883, *1892, p. 37
Type Species:
E. regularis Terquem, 1883, *1891, p. 379 (=E. mosquensis Uhlig, 1883, *1962, p. 766), SD Galloway & WISSLER, 1927, *766, p. 60
Images
(Click to enlarge in a new window)
Fig. 634,1,2. *E. regularis, M.Jur.(Bajoc.), Fr. (1), M.Jur.(Dogger - gamma), Eu.(Aus.) (2), 1a-c, opp. sides and edge of holotype, X40 (*700); 2a-c, opp. sides and edge of holotype of E. mosquensis Uhlig, X72 (*1332). -- Fig. 634,3-5. E. spinulifera (Reuss), L.Cret.(Alb.), Eu.(Neth.), 3a-c, opp. sides and edge, X50 (*555); 4, horiz. sec. seen from umbilical side, showing internal partition, X36; 5 , axial sec. through chamber to show septal foramen (f), and internal partition (p), X195 (*943). -- Fig. 634,6. E. terquemi (Antonova), M.Jur. (Bajoc.), USSR(Caucasus), 6a-c, opp. sides and edge view, X80 (*24). -- Fig. 634,7. E. tentlicostata BARTENSTEIN & BRAND, L.Cret.(Valangin.), N.Ger.; 7a-c, opp. sides and edge view of holo- type, X65 (*95)
Synonyms
Brotzenia
Geographic Distribution
Eu.-N.Am.-Afr.
Age Range
Beginning Stage in Treatise Usage:
Trias., M.Jur.
Beginning International Stage:
Aalenian
Fraction Up In Beginning Stage:
0
Beginning Date:
174.7
Ending Stage in Treatise Usage:
L.Cret.
Ending International Stage:
Albian
Fraction Up In Ending Stage:
100
Ending Date:
100.5
Description
Test lenticular, trochospiral, periphery angular to carinate, umbilical area closed, internal partition crossing chamber cavity from outer margin of lateromarginal apertural opening parallel to periphery on umbilical side, extending nearly or completely to wall against previous whorl, sutures thickened, may be elevated, oblique areal oval aperture on umbilical side, later remaining as interseptal foramen, and additional lateromarginal opening paralleling periphery on umbilical side, in earlier chambers secondarily closed by shell material