FAMILY 33. ROTALIIDAE 273 



Rotalia (part) of authors, 



Rotalina (part) of authors. 



Pulvinulina Parker and Jones, in Carpenter, Parker and Jones, 



Introd. Foram., 1862, p. 201 (genotype, by designation. Nautilus 



repandus Fichtel and Moll). 

 Placentula (part) Berthelin (not Lamarck). 

 Cyclospira Eimer and Fickert, Zeitschr. Wiss. Zool., vol. 65, 1899, p. 702 



(genoholotype, Rotalina schreihersii d'Orbigny). 



Test trochoid, usually biconvex, umbilical area closed but not 

 typically with a plug; wall calcareous, perforate; aperture, a 

 low opening between the periphery and umbilical area, usually 

 well away from the peripheral margin. 



Carboniferous ( ?) Jurassic to Recent. 



Genus PLANOPULVINULINA Schubert, 1920 

 Plate 53, figure 18 



Genotype, by designation, Piilviniilina dispansa H. B, Brady 



Planopulvinulina Schubert, Pal. Zeitschr., vol. 3, 1920, p. 153. 

 Pulvinulina (part) H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 687. 



Test trochoid in the early stages, later becoming very irregular 

 in form but the chambers not annular; ventral face of the 

 chambers with large pores which apparently serve as the 

 apertures. 



Late Tertiary and Recent, 



This is apparently a genus which has its nearest relationships, 

 as suggested by Brady, with Eponides punctulatus (d'Orbigny). 

 With it, Schubert included PlanorhuUna vermiculata d'Orbigny, 

 a form closely related to Clbicides and later made the genotype 

 of Cyclocibicides Cushman. The development and relationships 

 o:^ the two forms are very different. 



Genus ROTALIA Lamarck, 1804 



Plate 40, figures 3-5; plate 41, figure 16 

 Genoholotype, Rotalia trochidiformis Lamarck 



Rotalia LAMARCK, Ann. Mus., vol. 5, 1804, p. 184. 

 Natitihis (part) of authors. 



Streblus Fischer, Mem. Soc. Imp. Nat. Moscou, vol. 5, 1817, p. 449 (geno- 

 holotype, Streblus tortuosus Fischer). 

 Tnrbimdiva d'Orbigny, Ann. Sci. Nat., vol, 7, 1826, p, 275 (genotype, by 



