Abstract
Abstract. The holotype and some additional specimens from the type material of the dinoflagellate cyst species Leberidocysta? scabrata (Jain & Taugourdeau-Lantz, 1973) Stover & Evitt, 1978, described from the Grey Shale Member (Lower Albian), Dalmiapuram Formation, Cauvery Basin, southern India are re-investigated. The diagnosis is emended and the species is reallocated to the genus Ovoidinium Davey, 1970, emend. Lentin & Williams, 1976.
Highlights
Jain & Taugourdeau-Lantz (1973) and Jain (1977) described the dinoflagellate cysts, including several new taxa, from the Grey Shale Member, Dalmiapuram Formation (Upper Aptian– Middle Albian), Cauvery Basin, southern India
STRATIGRAPHIC STATUS AND AGE OF THE GREY SHALE MEMBER A thick, highly fossiliferous marine Cretaceous succession is exposed in the Cauvery Basin along the southernmost part of the eastern margin of India
Subsequent to the three-fold subdivision of these rocks by Blanford (1862) – Uttatur, Trichinopoly and Ariyalur Groups in ascending order – modifications in the lithostratigraphy have been proposed by several workers (Ramanathan, 1968; Banerji, 1973; Sundaram & Rao, 1979, 1986; Ramasamy & Banerji, 1991; Tewari et al, 1996; Sundaram et al, 2001)
Summary
Jain & Taugourdeau-Lantz (1973) and Jain (1977) described the dinoflagellate cysts, including several new taxa, from the Grey Shale Member, Dalmiapuram Formation (Upper Aptian– Middle Albian), Cauvery Basin, southern India. TAXONOMIC COMMENTS Jain & Taugourdeau-Lantz (1973) described Hexagonifera scabrata from the Grey Shale Member exposed in the Kallakudi quarry II, near Dalmiapuram.
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