Abstract
Inter-trappean sediments, of uppermost Maastrichtian-basal Paleocene age in the region of Anjar (Kachchh, Gujarat State), NW India, have yielded relatively well diversified limnic ostracode assemblages. Two new species and sub-species are described: Frambocythere tumiensis anjarensis n. subsp. and Zonocypris gujaratensis n. sp., present on both sides of the presumed Cretaceous-Tertiary boundary. Other encountered species belong to the genera Gomphocythere?, Candona, Typhlocypris, Paracandona?, Potamocypris?, Mongolianella and Valdonniella?. A palaeoecogical interpretation is proposed, and the palaeobiogeographical relationships are discussed. Strong affinities occur with China and Mongolia (sino-mongol province), more restricted with southern Europe, very weak with Africa and South America. These Laurasian affinities agree with the hypothesis of an early India — Asia collision during the uppermost Cretaceous. As already observed in other parts of the world, it does not seem that the limnic ostracode faunas were qualitatively much affected by an event which may have occurred at the Cretaceous-Tertiary boundary.
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