| Reference Type | Journal (article/letter/editorial) |
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| Title | The genus Biplanispira Umbgrove (Foraminiferida) and its occurrence in India |
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| Journal | Geological Magazine |
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| Authors | Samanta, Bimal K. | Author |
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| Year | 1984 (July) | Volume | 121 |
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| Issue | 4 |
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| Publisher | Cambridge University Press (CUP) |
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| DOI | doi:10.1017/s0016756800029204Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 252372 | Long-form Identifier | mindat:1:5:252372:3 |
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| GUID | 0 |
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| Full Reference | Samanta, Bimal K. (1984) The genus Biplanispira Umbgrove (Foraminiferida) and its occurrence in India. Geological Magazine, 121 (4) 311-318 doi:10.1017/s0016756800029204 |
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| Plain Text | Samanta, Bimal K. (1984) The genus Biplanispira Umbgrove (Foraminiferida) and its occurrence in India. Geological Magazine, 121 (4) 311-318 doi:10.1017/s0016756800029204 |
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| In | (1984, July) Geological Magazine Vol. 121 (4) Cambridge University Press (CUP) |
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| Abstract/Notes | AbstractBiplanispira Umbgrove is closely related to Pellatispira Boussac, from which it probably arose by the subdivision of the median chambers by the rapidly expanding marginal crest and the development of planispirally arranged secondary chambers on both sides of the peripheral flange. The genus appears to be polyphyletic, its species having been derived from different representatives of Pellatispira. Illustrated records of Biplanispira are confined to the region between eastern India and Eua, Tonga, and the genus appears to be restricted to the middle and upper parts of the Upper Eocene. In the Upper Eocene of the Garo Hills, eastern India, it is represented by B. hoffmeisteri (Whipple) and in the Andaman Islands by B. mirabilis (Umbgrove). This is the first record of the genus from mainland India. |
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