In the deserts of Rajasthan's Jaisalmer district, palaeontologists have stumbled upon nearly 47 million-year-old fossils of primitive whale, shark teeth, crocodilian teeth and turtle bones, which according to experts suggest that the area was under sea in the pre-historic age.
Kumar said the most important aspect in this finding is a fragmented jaw and vertebrae, which have been identified as that of a primitive whale.
The presence of the marine fossils of Middle Eocene period indicates that about 47 million years ago, there was a sea in this area, he said, adding that faunal record shows similarity with earlier reported fauna of middle Eocene Harudi formation, Kachhch Basin and Gujarat, thus representing similar shallow marine deposition under tropical-temperate conditions.
The Eocene Epoch constitutes the middle part of the Paleogene period (65-23 million years ago), preceded by the Paleocene and succeeded by the Oligocene epoch (34-23 million years ago); all of these periods and epochs were part of the Cenozoic Era (65 million years ago).
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