Freshwater ostracoda from the Upper Cretaceous intertrappean beds at Mamoni (Kota District), southeastern Rajasthan

Abstract

Eight species, none of which were very abundant, were encountered at Mamoni, in the Kota District of southeastern Rajasthan State, India. The fauna was recovered from an approximately 1 m thick bed of cherty marl and chert overlying a volcanic sequence, near the village of Mamoni. This is the most northerly occurrence of intertrappean deposits. The low diversity of the fauna is probably due to low abundance. Two new species, Mongolianella subarcuata sp. nov. and Eucypris cantan¬tion sp. nov. are described, which demonstrates the fact that even a low diversity fauna from such an isolated locality can reveal new species. The remaining six species have all been described from deposits of the same age from elsewhere to the south and west in the Deccan Volcanic Province.