Podospermum gen et sp nov, an Acmopyle-like dispersed silicified ovule/seed from Lower Cretaceous intertrappean beds of the Rajmahal Basin, India

An investigation of silicified ovules/seeds recovered from the Early Cretaceous intertrappean rocks of Sonjori, Rajmahal Basin, has revealed the occurrence of Acmopyle-like ovules/seeds described here as Podospermum rajmahalensis gen. et. sp. nov. These fossils depict characteristic features of podocarpaceous ovules/seeds, i.e., erect posture of drupaceous ovule/seed subtended by a fertile bract; ovuliferous scale indistinguishable from the integument enclosing an ovule; integument consisting of three layers and a nucellus free from integument except at base. The presence of two archegonia in the apical part of the female prothallus and the presence of tentpole-like nucellar tissue in the ovule indicate the post-pollination stage of development of the ovule. Moreover, the presence of embryonic tissue in the female prothallus indicates the post-fertilization stage. The presence of these podocarpaceous remains further confirms the palaeoposition of the Indian subcontinent during the Early Cretaceous period. (c) 2006 Elsevier Ltd. All rights reserved.