Jania, a Geniculate Coralline Alga from Middle Eocene to Lower Miocene of Kachchh, Gujarat

The present communication documents for the first time Six species of Jania Lamouroux, a geniculate coralline alga of Subfamily Corallinoideae of Family Corallinaceae, Division Rhodophyta from Fulra Limestone Formation (Middle Eocene) exposed at Babia Hill and Jadwa, Maniyara Fort Formation( Oligocene) at Maniyara Dam, Bermoti Hill, Bermoti Nadi Section and Khan Nadi Formation (Lower Miocene) at Mokhra in Kachchh district of Gujarat. Six species of Jania including two new species Jania badvei and J sripadaraoi are reported in this study. The species of Jania suggest clear water shelf depositional environment under low energy for limestone of Fulra Limestone Formation and Khan Nadi Formation, while high energy shelf depositional environment for limestone of Maniyara Fort Formation.