Kimina, Yoo, 1994

Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, Records of the Australian Museum 46 (1), pp. 63-120 : 90

Kimina n.gen.

Type species. Kimina globosa n.sp.

Definition. Shell minute, thin, globose to elongate, narrowly phaneromphalous. Surface smooth except for very weak growth lines. Protoconch deviated, aperture simple, circular.

Geological age. Late Tournaisian.

Etymology. This genus is named after my wife Kim to record her contributions throughout this study.

Remarks. This genus is similar to recent genus Rissoella in shell and protoconch characters, and is different from any known Palaeozoic gastropods. Rissoella which is characterised by a simple, sometime deviated protoconch was included tentatively in the Heterogastropoda by Ponder & Yoo (1977), a group which shows mixed opisthobranch and prosobranch characters. Climo (1975) has outlined the characteristics of some families of the Heterogastropoda and suggested that the Heterogastropoda shows more affinities with opisthobranchs than mesogastropods. However, Ponder & Waren (1988) assigned the Heteromorpha to the same rank as the Opisthobranchia under subclass Heterobranchia. Kimina is tentatively included in the Heterogastropoda .

Australian Carboniferous species. Kimina australis n.sp., from 'Kyndalyn'; Kimina globosa n.sp., from 'Marohn'; Kimina minor n.sp., from 'Marohn'; Kimina sp. from 'Marohn'.