Cauveridinium, a new Gv-type dinoflagellate cyst from Trichinopoly Formation, Cauvery Basin, India

Abstract

Some lenticular dinoflagellate cysts with process ornamentation restricted to circumferential border zone, characterized by proximal process connections through ridges, have been recovered from the limestone unit of Trichinopoly Formation, Cauvery Basin. These Gv-cysts have been described under a new genus, Cauveridinium. Three new species, viz., C. indicum, C. intermedium and C. longispinosum, are proposed. A detailed comparison with other Gv-cyst taxa has been attempted.