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Dictyoconoides
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Rotaliacea
Family:
Rotaliidae
Subfamily:
Rotaliinae
Formal Genus Name and Reference:
Dictyoconoides NUTTALL, 1925, p. 384. [nom. subst. pro Conulites CARTER, 1861, °287b, p. 53 (non FISCHER DE WALDHEIM, 1832; nec COZZENS, 1846]
Type Species:
*Conulites cooki CARTER, 1861, *287b, p. 53, OD
Images
(Click to enlarge in a new window)
Fig. 483,1-5. *D. cooki (Carter), Somali. (1), India (2-5), 1a-c, opposite sides and edge view, X6 (*1788c); 2, axial sec., X8; 3, tang. sec. through rectangular chambers, X16; 4, horiz. sec. through pillars, X8 (*1367); 5, axial sec. of lectotype, showing chambers near outer margin of conical test and prominent vertical pillars, X10 (*561).
Synonyms
Geographic Distribution
Asia (India-Qatar Penin.)-Afr.(Somali.)
Age Range
Beginning Stage in Treatise Usage:
M.Eoc.
Beginning International Stage:
Lutetian
Fraction Up In Beginning Stage:
0
Beginning Date:
48.07
Ending Stage in Treatise Usage:
M.Eoc.
Ending International Stage:
Bartonian
Fraction Up In Ending Stage:
100
Ending Date:
37.71
Description
Test conical, with proloculus at apex, spiral side with thin imperforate lamina beneath which is layer of rectangular, spirally arranged chambers, in multiple spire, umbilical side with radiating pillars of shell matter extending out from apex and 0.1-0.15 mm. diam. at surface, with intervening spaces of nearly same size, spaces being divided by horizontal partitions, septa double, with median intraseptal canal and subsutural canal system, wall calcareous, umbilical side with granules, cavities in umbilical region separated by perforate plates and buttressing pillars, aperture multiple, umbilical, consisting of pores between pillars.
References
Nuttall, W. L. F., 1925, Two species of Eocene Foraminitera from India; Alveolina elliptica and Dictyoconoides cooki: Ann. \& Mag. Nat. History, ser. 9, v. 16, p. 378-388, pl. $20-$ 21.-(1368) 1925, The stratigraphy of the Laki Series (Lower Eocene) of parts of Sind and Baluchistan (India); with a description of the larger Foraminifera contained in those beds: Geol. Soc. London, Quart. Jour., v. 81, pt. 3, p. 417-453, pl. 23-27, text-fig. 1-5, 1 table.-(1369) 1926, The zonal distribution of the larger Foraminifera of the Eocene of Western India: Geol. Mag., v. 63, p. 495-504, table 1-4.—(1370) 1928, Notes on the Tertiary Foraminifera of southern Mex- ico: Jour. Paleontology, v. 2, p. 372-376, pl. 50.——(1371) 1930, Eocene Foraminitera from Mexico: Same, v. 4, p. 271-293, pl. 23-25. -(1371A) 1932, Lower Oligocene Foraminifera from Mexico: Same, v. 6, p. 3-35, pl. 1-9.-(1372) 1933, Two species of Miogypsina from the Oligocene of Mexico: Same, v. 7, p. 175-177, pl. 24.
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:
Dictyoconoides NUTTALL, 1925, p. 384. [nom. subst. pro Conulites CARTER, 1861, °287b, p. 53 (non FISCHER DE WALDHEIM, 1832; nec COZZENS, 1846]
Type Species:
*Conulites cooki CARTER, 1861, *287b, p. 53, OD
Images
(Click to enlarge in a new window)
Fig. 483,1-5. *D. cooki (Carter), Somali. (1), India (2-5), 1a-c, opposite sides and edge view, X6 (*1788c); 2, axial sec., X8; 3, tang. sec. through rectangular chambers, X16; 4, horiz. sec. through pillars, X8 (*1367); 5, axial sec. of lectotype, showing chambers near outer margin of conical test and prominent vertical pillars, X10 (*561).
Synonyms
Geographic Distribution
Asia (India-Qatar Penin.)-Afr.(Somali.)
Age Range
Beginning Stage in Treatise Usage:
M.Eoc.
Beginning International Stage:
Lutetian
Fraction Up In Beginning Stage:
0
Beginning Date:
48.07
Ending Stage in Treatise Usage:
M.Eoc.
Ending International Stage:
Bartonian
Fraction Up In Ending Stage:
100
Ending Date:
37.71
Description
Test conical, with proloculus at apex, spiral side with thin imperforate lamina beneath which is layer of rectangular, spirally arranged chambers, in multiple spire, umbilical side with radiating pillars of shell matter extending out from apex and 0.1-0.15 mm. diam. at surface, with intervening spaces of nearly same size, spaces being divided by horizontal partitions, septa double, with median intraseptal canal and subsutural canal system, wall calcareous, umbilical side with granules, cavities in umbilical region separated by perforate plates and buttressing pillars, aperture multiple, umbilical, consisting of pores between pillars.
References
Nuttall, W. L. F., 1925, Two species of Eocene Foraminitera from India; Alveolina elliptica and Dictyoconoides cooki: Ann. \& Mag. Nat. History, ser. 9, v. 16, p. 378-388, pl. $20-$ 21.-(1368) 1925, The stratigraphy of the Laki Series (Lower Eocene) of parts of Sind and Baluchistan (India); with a description of the larger Foraminifera contained in those beds: Geol. Soc. London, Quart. Jour., v. 81, pt. 3, p. 417-453, pl. 23-27, text-fig. 1-5, 1 table.-(1369) 1926, The zonal distribution of the larger Foraminifera of the Eocene of Western India: Geol. Mag., v. 63, p. 495-504, table 1-4.—(1370) 1928, Notes on the Tertiary Foraminifera of southern Mex- ico: Jour. Paleontology, v. 2, p. 372-376, pl. 50.——(1371) 1930, Eocene Foraminitera from Mexico: Same, v. 4, p. 271-293, pl. 23-25. -(1371A) 1932, Lower Oligocene Foraminifera from Mexico: Same, v. 6, p. 3-35, pl. 1-9.-(1372) 1933, Two species of Miogypsina from the Oligocene of Mexico: Same, v. 7, p. 175-177, pl. 24.