Arammlagenum Rhumbler, 1913 accepted as Ammolagena Eimer & Fickert, 1899 (original description)
Arammodiscodum Rhumbler, 1913 accepted as Ammodiscoides Cushman, 1909 (original description)
Arammodiscum Rhumbler, 1913 accepted as Ammodiscus Reuss, 1862 (original description)
Arastrorhizum Rhumbler, 1913 accepted as Astrorhiza Sandahl, 1858 (original description)
Arbathysiphum Rhumbler, 1913 accepted as Bathysiphon Sars, 1872 (original description)
Arboderium Rhumbler, 1913 accepted as Boderia Wright, 1867 (original description)
Arbotellum Rhumbler, 1913 accepted as Botellina Carpenter, 1869 (original description)
Arbrachysiphon Rhumbler, 1913 accepted as Brachysiphon Chapman, 1906 (original description)
Arbulinarium Rhumbler, 1913 accepted as Keramosphaera Brady, 1882 (original description)
Archaediscoum Rhumbler, 1913 † accepted as Archaediscus Brady, 1873 † (original description)
Archapmanoum Rhumbler, 1913 † accepted as Chapmanina Silvestri, 1931 † (original description)
Arcornuspirum Rhumbler, 1913 accepted as Cornuspira Schultze, 1854 (original description)
Arcrithionum Rhumbler, 1913 accepted as Crithionina Goës, 1894 (original description)
Ardactylosaccum Rhumbler, 1913 accepted as Dactylosaccus Rhumbler, 1894 (original description)
Ardendrophyrum Rhumbler, 1913 accepted as Dendrophrya Wright, 1861 (original description)
Ardendrotubum Rhumbler, 1913 accepted as Dendrotuba Rhumbler, 1894 (original description)
Ardiplogromium Rhumbler, 1913 accepted as Diplogromia Rhumbler, 1904 (original description)
Arglomospirum Rhumbler, 1913 accepted as Glomospira Rzehak, 1885 (original description)
Arhaliphysemum Rhumbler, 1913 accepted as Halyphysema Bowerbank, 1862 (original description)
Arhemidiscum Rhumbler, 1913 † accepted as Hemidiscus Schellwien, 1898 † (original description)
Arhippocrepum Rhumbler, 1913 accepted as Hippocrepina Parker in Dawson, 1870 (original description)
Arhospitellum Rhumbler, 1913 accepted as Hospitella Rhumbler, 1911 (original description)
Arhyperammum Rhumbler, 1913 accepted as Hyperammina Brady, 1878 (original description)
Arinvolutoum Rhumbler, 1913 † accepted as Involutina Terquem, 1862 (original description)
Arjaculum Rhumbler, 1913 accepted as Jaculella Brady, 1879 (original description)
Arkalamopsum Rhumbler, 1913 accepted as Kalamopsis de Folin, 1883 (original description)
Arlagenammina Rhumbler, 1913 accepted as Lagenammina Rhumbler, 1911 (original description)
Arlieberkuehnium Rhumbler, 1913 accepted as Lieberkuehnia Claparède & Lachmann, 1859 (original description)
Armarsipellum Rhumbler, 1913 accepted as Marsipella Norman, 1878 (original description)
Armarsupium Rhumbler, 1913 accepted as Marsupulina Rhumbler, 1904 (original description)
Armasonellum Rhumbler, 1913 accepted as Masonella Brady, 1889 (original description)
Armyxothecum Rhumbler, 1913 accepted as Myxotheca Schaudinn, 1893 (original description)
Arnodellum Rhumbler, 1913 accepted as Nodellum Rhumbler, 1913 (original description)
Arnodosinum Rhumbler, 1913 † accepted as Nodosinella Brady, 1876 † (original description)
Arophiotubum Rhumbler, 1913 accepted as Ophiotuba Rhumbler, 1894 (original description)
Arpatellum Rhumbler, 1913 accepted as Patellina Williamson, 1858 (original description)
Arpelosum Rhumbler, 1913 accepted as Pelosina Brady, 1879 (original description)
Arperneroum Rhumbler, 1913 accepted as Bullopora Quenstedt, 1856 † (original description)
Arpilum Rhumbler, 1913 accepted as Pilulina Carpenter, 1870 (original description)
Arplacopsum Rhumbler, 1913 † accepted as Bullopora Quenstedt, 1856 † (original description)
Arplagiophron Rhumbler, 1913 accepted as Plagiophrys Claparède & Lachmann, 1859 (original description)
Arpolyphragmoum Rhumbler, 1913 † accepted as Coscinophragma Thalmann, 1951 † (original description)
Arproblematoum Rhumbler, 1913 † accepted as Involutina Terquem, 1862 (original description)
Arpsammonyxum Rhumbler, 1913 accepted as Psammonyx Döderlein, 1892 (original description)
Arpsammophoum Rhumbler, 1913 † accepted as Ammovertella Cushman, 1928 † (original description)
Arpsammosiphoum Rhumbler, 1913 (original description)
Arpsammosphaerum Rhumbler, 1913 accepted as Psammosphaera Schulze, 1875 (original description)
Arrhabdammum Rhumbler, 1913 accepted as Rhabdammina Sars, 1869 (original description)
Arrhizammum Rhumbler, 1913 accepted as Rhizammina Brady, 1879 (original description)
Arrhynchogromium Rhumbler, 1913 accepted as Rhynchogromia Rhumbler, 1894 (original description)
Arrhynchosaccum Rhumbler, 1913 accepted as Rhynchosaccus Rhumbler, 1894 (original description)
Arrogromium Rhumbler, 1913 accepted as Allogromia Rhumbler, 1904 (original description)
Arsaccammina Rhumbler, 1913 accepted as Saccammina Sars, 1869 (original description)
Arschultzellum Rhumbler, 1913 accepted as Schultzella Rhumbler, 1904 (original description)
Arshepheardellum Rhumbler, 1913 accepted as Shepheardella Siddall, 1880 (original description)
Arsorosphaerum Rhumbler, 1913 accepted as Sorosphaera Brady, 1879 (original description)
Arspirillinum Rhumbler, 1913 † accepted as Spirillina Ehrenberg, 1843 (original description)
Arsquamulum Rhumbler, 1913 accepted as Squamulina Schultze, 1854 (original description)
Arstorthosphaerum Rhumbler, 1913 accepted as Storthosphaera Schultze, 1875 (original description)
Artechnitum Rhumbler, 1913 accepted as Technitella Norman, 1878 (original description)
Artetraxoum Rhumbler, 1913 † accepted as Tetrataxis Ehrenberg, 1854 † (original description)
Arthalamophaga Rhumbler, 1913 accepted as Thalamophaga Rhumbler, 1911 (original description)
Artholosum Rhumbler, 1913 accepted as Tholosina Rhumbler, 1895 (original description)
Arthurammina Rhumbler, 1913 accepted as Thurammina Brady, 1879 (original description)
Artubinum Rhumbler, 1913 accepted as Tubinella Rhumbler, 1906 (original description)
Arturritellum Rhumbler, 1913 accepted as Turritellella Rhumbler, 1904 (original description)
Arvanhoeffenella Rhumbler, 1913 accepted as Vanhoeffenella Rhumbler, 1905 (original description)
Arverrucum Rhumbler, 1913 accepted as Verrucina Goës, 1896 (original description)
Arvidaloum Rhumbler, 1913 † accepted as Vidalina Schlumberger, 1900 † (original description)
Arwebbinum Rhumbler, 1913 accepted as Webbinella Rhumbler, 1904 (original description)
Arwebbum Rhumbker, 1913 accepted as Webbina d'Orbigny in Webb & Berthelot, 1839 (original description)
Hospitellum Rhumbler, 1913 accepted as Hospitella Rhumbler, 1911 (original description)
Nodellum Rhumbler, 1913 (original description)
Nodosaroum Rhumbler, 1913 (original description)
Placopsum Rhumbler, 1913 † accepted as Bullopora Quenstedt, 1856 † (original description)
Webbum Rhumbler, 1913 accepted as Webbina d'Orbigny in Webb & Berthelot, 1839 (original description)