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Kimmeridgian (Upper Jurassic) Ostracodes from the Jhuran Formation, Mainland Kachchh, Gujarat, India

  • T. Mahalakshmi,
  • M. Kumari,
  • G. P. Muduli

摘要

Abstract

Nineteen ostracode species, belonging to 14 genera, including one unidentified genus are recorded from the upper Lower and Middle Members of Jhuran Formation, Mainland Kachchh, Gujarat, India for the first time. Two species—Majungaella perforata Grekoff and Pirilebris tenuisulcata Mette et Geigerare assigned to already known taxa, and three species—Lophocythere? jhuranensis, Macrodentina jaduraensis and Patellacythere lineata—are described as new by two of the authors (M.K. and T.M.); and fourteen species are left in open nomenclature. Based on the distribution of the fauna, one ostracode biozone Macrodentina jaduraensis Taxon-range Zone has been proposed for the beds of upper Lower and Middle Members of Jhuran Formation and a Middle-Upper Kimmeridgian age is assigned for the zone.