Middle Miocene-Pliocene freshwater gastropods of the Churia Group, west-central Nepal

In the Churia (Siwalik) Group of west-central Nepal fossil freshwater molluscs occur in relative abundance. No systematic study of these fossils has been done. Therefore, in this paper freshwater gastropods belonging to nine genera, including two new species, are described : Bellamya celsispiralis, sp. nov., Bellamya sp. A, Bellamya sp. B, Angulyagra sp., Pila sp., Bithynia sp., Melanoides sp., Brotia palaeocostula, sp. nov., Brotia sp. A, Brotia sp. B, Brotia sp. C, Lymnaea sp., Indoplanorbis sp., and Gyraulus sp. The genus Angulyagra is recorded for the first time from the Siwaliks.