A revision of the genus Ancilla Lamarck, 1799 (Mollusca : Olividae : Ancillinae)
| dc.contributor.advisor | Heeg, Jan. | |
| dc.contributor.author | Kilburn, Richard Neil. | |
| dc.date.accessioned | 2014-09-05T13:07:26Z | |
| dc.date.available | 2014-09-05T13:07:26Z | |
| dc.date.created | 1982 | |
| dc.date.issued | 1982 | |
| dc.description | Thesis (Ph.D.)-University of Natal, Pietermaritzburg, 1981. | en |
| dc.description.abstract | The genus Ancilla Lamarck, 1799, contains 34 valid species and subspecies; 41 names previously applied to the group are reduced to 23, and 11 new species described (Kilburn, 1977, 1980, 1981). A provisional subgeneric classification is proposed. Subgenus Hesperancilla Kilburn, 1981, is established for the Brazilian A. matthewsi Burch & Burch, 1967, and Javancilla Kilburn, 1981, for the Eocene A. boettgeri Martin, 1914. Inadequate data on its type species prevents definition of subgenus. Ancilla s.s. at this stage, but Recent Indo-Pacific taxa are provisionally divided into (a) subgenus Sparellina P. Fischer, 1883, with an autapomorphic pectinate rachidian and (b) subgenera sparella Gray, 1857, and Chilotygma H. &. A. , Adams, 1853, with synplesiomorphic tricuspidate rachidians. The phylogeny and biogeography of the genus are discussed. The subfamily Ancillinae is reclassified, and a tentative cladogram proposed. | en |
| dc.identifier.uri | http://hdl.handle.net/10413/11150 | |
| dc.language.iso | en_ZA | en |
| dc.subject | Gastropoda. | en |
| dc.subject | Mollusks. | en |
| dc.subject | Olividae. | en |
| dc.subject | Theses--Zoology. | en |
| dc.title | A revision of the genus Ancilla Lamarck, 1799 (Mollusca : Olividae : Ancillinae) | en |
| dc.type | Thesis | en |