Sharma, M.; Shukla, Y. (2012). Occurrence of helically coiled microfossil Obruchevella in the Owk Shale of the Kurnool Group and its significance. Journal of Earth System Science. 121: 755-768.
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Sharma, M.; Shukla, Y.
2012
Occurrence of helically coiled microfossil Obruchevella in the Owk Shale of the Kurnool Group and its significance