Pars 22 Planorbina 1483 
1856 
1860 
1862 
1865 
1866 
1867 
1872 
1873 
1874 
1879 
1879 
1870 
1880 
1885 
1885 
1880 
1889 
1801 
1901 
1501 
1914 
*1852 
1854 
Planorbis discus, Forbes, (56a) On the tertiary Fluvio-Marine 
Formation of the Isle of Wight (Mem. Geol. Survey Gr. Bri- 
tain), p. 67, 68, ff. 
Planorbis discus, Vogt. (60a) Grundriss der Geologie, p. 359, 
Textfig. 397. 
Planorbis discus, Bristow, (62a) The Geology of the Isle of 
Wight. — Mem. Geol. Survey Gr. Britain a. Mus. Pract. Geol. 
10, p. 68, 70, 72, 78, 76, 80, 199, Textfig. 55. 
Planorbis discus, Lyell, (65a) Elements of Geology. 6th ed. p. 
280, Textfig. 216. 
Planorbis discus, Lowry, (66a) Figures of the characteristic 
British Tertiary Fossils. tab. II. 
Flanorbis discus, J. B. Greppin, (67a) Essai géol sur le Jura 
Suisse, p. 124. 
Planorbis discus, Naumann, (72a) Lehrbuch d. Geognosie. 2. A., 
Ib 3. DR 
Planorbis discus, Sandberger, (70a) Die Land- u. Süsswasser- 
conchylien d. Vorwelt, p. 285, tab. XVI, fig. 4—4b. 
Planorbis discus. Lyell, (74a) The Students Elements of Ge- 
ology. 2nd ed. p. 236, Textfig. 173. 
Planorbis discus, Lefévre. (79a) Mém. Soc. Malacologique de 
Belgique XIV, p. 84. 
Planorbis discus, Vogt, (79a) Lehrbuch der Geologie und Petre- 
faktenkunde. 4. A., LI, p. 710, Textfig. 725. 
Planorbis discus, Vogt, (79a) Lehrbuch der Geologie und Petre- 
faktenkunde, 4. À., II, p. 610, Textfig. 1355. 
Planorbis discus, Judd, (80a) The Quart. Journ. of the Geol. 
Soc. of London XXXVI, p. 162. 
Planorbis discus, Etheridge, (85a) Manual of Geology II, p. 632. 
tab. XXI, fig. 8. 
Planorbis discus, Zittel, (85a) Handbuch der Palaeontologie. 
Abt. I, vol. II, p. 302—. 
Planorbis discus, Bristow. (89a) The Geology of the Isle of 
Wight. 2nd ed. (Mem. Geol. Survey. England and Wales). 
p. 161, 162, fL, 171, ff., 203, Textfig. 53. 
Planorbis discus, Nicholson and Lydekker, (893) A Manual of 
Paleontology I. p. 814, Textfig. 730B. 
Planorbis discus, Newton. (91a) Systematic List of the F. Ed- 
wards Collection of British Oligocene and Eocene Mollusca in 
the British Museum, p. 281. 
Planorbis discus, Newton, (01a) The Journ. of Gonehology X. 
p.07. 
Planorbis discus, H. and H. B. Woodward, (01a) Table of Bri- 
tish Fossils. Tabelle 1. 
Planorbis discus, Park, (14a) A Text Book of Geology. tab. LVII, 
fig. 8. 
Vorkommen:  U. Oligocin, Tongrien:  Headon beds: 
?Headon Hill (Wight). — ?Osborne beds. — Bembridge beds: 
Bembridge (Wight), Cary s' Sconce (Wight), White-cliff- 
Bay (Wight). 
M. Oligocán, Rupélien: Hamstead beds: Hamstead (Norris). 
Hierzu gehórt wohl als Jugend- bzw. Trockenform: 
Planorbis oligyratus, F. Edwards, (49a) A Monograph of the 
Eocene Mollusca ... of England (Palaeontogr. Soc) Pt IL 
p. 103, tab, XV, fig. 3a—e. 
Planorbis oligyratus, Morris, (54a) A Catalogue of British Fos- 
sils. 2nd ed., p. 269. 
