..., Acarotrochus, which is assigned to the Family Discorbidae Ehrenberg, 1838 . The principal characters of Acarotrochus are a low trochospiral test with a foramenal plate of an extension of septal flap dividing a main chamber lumen and foliar chamberlet, a deeply incised umbilical intraseptal interlocular space...

..., Turrilinidae, Bolivinidae, Siphogenerinoididae, Discorbidae and Nonionid ae from the Nodular limestone of the Bagh Beds, Madhya Pradesh is reported. The occurrence of mixed foraminiferal assemblage suggests normal and shallow marine conditions for the deposition of Nodular Limestone. In comparison...

...William W. Hay; Kenneth M. Towe; Ramil C. Wright Abstract The wall structure of representative species of the foraminiferal families Miliolidae, Soritidae, Nodosariidae, Sphaeroidinidae, Buliminidae, Discorbidae Elphidiidae, and Globigerinidae has been examined by transmitted light, polarized light...

... and Tappan (1964b) regarded Rosalina and Gavelinopsis as discorbinids, and Gavelinella as an anomalinid. Haynes (1981) proposed a classification in which the Discorbacea are made up of the Discorbidae, Cancrisidae, Bagginidae and Cymbaloporidae. The Discorbidae contain Rosalina, Gavelinopsis...

... is unclear as well. In the same scheme, they propose that the Conorbinidae gave rise to the Gavelinellidae via the Bagginidae and the Chilostomellidae, and to the Rosalinidae via the Bagginidae, Rotaliidae and Discorbidae. The removal of the central taxon from the Conorbinidae to the Rosalinidae...

.... A. , 1992 , A revision and reclassification of the Discorbidae, Rosalinidae, and Rotaliidae : Journal of Foraminiferal Research , v. 22 , p. 166 – 180 . Haynes , J. R. and Whittaker , J. E. , 1990 , The status of Rotalia Lamarck (Foraminifera) and of the Rotaliidae Ehrenberg...

..., 1838 Family: DISCORBIDAE Ehrenberg, 1838 Subfamily: DISCORBINAE Ehrenberg, 1838 Genus Rotorboides Sellier De Civrieux, 1977 Rotorboides granulosum (Heron-Allen and .Earland) (PI. 1, Figs. 1-8) 1915 Discorbilla vulvulata (d' Orbigny) granulosa Heron-Allen and Earland, v. 20 (1912-15), pl. 17, p. 695...

... illustrations differ from the illustrations by Heron-Allen and Earland, and claimed that their own specimens matched the types. Haynes (1981) reduced Gavelinopsis to a subgenus of Rosalina, which he classified in the Discorbidae. He differentiated Gavelinopsis from Rosalina solely by the presence...

... of Ammodiscidae, Rzehakinidae, Textulariidae, Ataxophragmiidae, Bolivinitidae, Discorbidae, Spirillinidae and Involutinidae. The application of the principle of uniformitarianism in the precise paleoecological deduction of the pre-Tertiary foraminiferal assemblages is generally 406 RESEARCH NOTES misleading...

..., because of apparent discrepancies in these groups. Glaessner stated "Apart from the 'Conorboididae' only the Asterigerinidae, Baggininae and Siphoninidae have monolamellid septa_ while many other Discorbidae, including the' Eponides repandus' group and also the Epistomariidae, Planorbulinidae...

... characteristics have also been used for general phylogenetic purposes (e.g. Cushman, 1928 ; Loeblich & Tappan, 1964 ) but the apertural development was not particularly stressed. Recently, a revision of some calcareous groups (Discorbidae, Rosalinidae, Rotaliidae, Bolivinitidae, Anomalinidae, Alabaminidae...

..., fig. 5 . 1993 Archaeosepta basiliensis (Mohler) nov. comb.: Tasli; 60, pl. 3, figs 6–7. 1996 Mohlerina basiliensis (Mohler) nov. comb.: Bucur et al. ; 70, pl. 3, figs 3–6; pl. 4, figs 2–3, 5–9. Family Discorbidae Ehrenberg, 1838 The study area is located in the Swiss Jura...

.... & Revets , S. A. 1992 . A revision and reclassification of the Discorbidae, Rosalinidae, and Rotaliidae . Journal of Foraminiferal Research , 22 : 166 – 180 . Heron-Allen , E. & Earland , A. 1913 . The Foraminifera of the Clare Island district, Co. Mayo, Ireland . Proceedings...

...—Calcarinidae; CY—Cymbaloporidae; D—Discorbidae and Glabratellidae; M—Miliolids; O—Others; PL—Planorbulinidae; R—Attached juvenile Rotaliines; S—Soritinae; T—Textulariina ...

..., these authors noted that this genus also lacks the typical umbilical features of the Eponidae and the Discorbidae and suggested that Neoeponides should probably placed within a new family, a view corroborated also by Hauser and Keller-Grünig (1993) . Neoeponides duwi (Nakkady) Plate 1, figures...