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Lakadongia, a new Orbitoidal foraminiferal genus from the Thanetian (Paleocene) of Meghalaya, NE India

¹ Department of Geology, Faculty of Education, Saitama University, Saitama, 338 8570, Japan, e-mail: matsumar{at}post.saitama-u.ac.jp
² Department of Geology, University of Lucknow, Lucknow, 226 007, India

A new Orbitoidal foraminiferal genus Lakadongia (type species Lakadongia indica, n. gen., n. sp.) is described from the Thanetian Lakadong Limestone of Meghalaya, NE India, following a critical review of the previous works on the Paleocene (Thanetian) Orbitoidal foraminifera such as Lepidorbitoides tibetica Douvillé, Lepidocyclina (Polylepidina) punjabensis Davies, Orbitosiphon praepunjabensis Adams and Setia primitiva Ferràndez-Cañadell. Lakadongia, gen. nov. is characterized by the presence of low trochospiral, quadriserial nepionts and the duplication of equatorial chamber layers in the equatorial layer. Lakadongia indica, n. gen., n. sp. is associated with Orbitosiphon tibetica (Douvillé), and both species are assigned to one new family, the Orbitosiphonidae.

This article has been cited by other articles:

				C. Ferrandez-Canadell The foraminiferal genus Lakadongia Matsumaru and Jauhri 2003, a re-evaluation Micropaleontology, December 1, 2004; 50(4): 397 - 400. [Abstract] [Full Text] [PDF]