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FIGURE 1. Map showing the central regions of India covered by the Malwa Group, and the location of the Bagwanya Intertrappean outcrops. Green areas are the extent of the Deccan Continental Flood Basalt (DCFB).

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FIGURE 2. Palaeoposition of India - Seychelles during the Cretaceous - Tertiary transition (65 Ma ago), showing the geographical distribution of the Deccan Continental Flood Basalt (DCFB), commonly known as the Deccan Traps. Location of the Deccan-Reunion Hotspot is shown in relation to the geographic limits of the DCFB. The red asterisk marks the location of the Bagwanya Intertrappean outcrop (modified after Chatterjee et al., 2006).

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FIGURE 3. Palaeoposition of India during the Maastrichtian (68 Ma), showing its location south of the Equator. The red asterisk shows location of the Bagwanya Intertrappean outcrop (modified after Scotese, 2014).

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FIGURE 4. Location of the Bagwanya Intertrappean outcrop, showing lithostratigraphy of the section and corresponding lithology of the arcellinidan-bearing horizons.

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FIGURE 5. (Scale bar for figures 1-6 is 10 µm; EF is England Finder Reading). 1-3. LM photograph of Centropyxis aculeata (Ehrenberg, 1832); 1. Slide no. 1A6, EF H48; 2. 1A3, EF K 40/2; 3. 1A4, EF K40/3. 4. LM photograph of Centropyxis aculeata (Ehrenberg, 1832) with big xenosomes of silica; Slide no 1A4, EF O61/2. 5-6. LM photograph of Centropyxis aculeata (Ehrenberg, 1832) showing presence of xenosomes of variety of diatoms as well as silica grains on the test; 5. Slide no 1A3, EF U38; 6. 1A1, EF E56/1. 7. SEM photograph of Centropyxis aculeata (Ehrenberg, 1832) showing presence of xenosomes of silica. 8. SEM showing magnified view of the same as 7. 9. SEM photograph of Centropyxis aculeata (Ehrenberg, 1832) showing presence of xenosomes of diatoms on the test. 10. SEM photograph of Centropyxis aculeata (Ehrenberg, 1832) showing presence of xenosomes of centric diatoms and silica grains on the test. 11-12 and 15 Centric diatom Cyclotella sp. on the test of Centropyxis aculeata (Ehrenberg, 1832). 13,14. SEM photographs of Centropyxis aculeata (Ehrenberg, 1832).

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FIGURE 6. 1. SEM photograph of Centropyxis aculeata (Ehrenberg, 1832). 2. SEM photographs of the centric diatom Pantocsekiella sp. (internal valve view) on the test of Centropyxis aculeata (Ehrenberg, 1832). 3 and 5. SEM photographs of the pennate diatom Achnanthes sp. on the test of Centropyxis aculeata (Ehrenberg, 1832). 4. SEM photograph of the pennate diatom Oricymba sp. on the wall of Centropyxis aculeata (Ehrenberg, 1832). 6. SEM photograph of the pennate diatom Diadesmis sp. on the wall of Centropyxis aculeata (Ehrenberg, 1832).

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FIGURE 7. (Scale bar is 10 µm; EF is England Finder Reading). 1. Azolla cretacea Stanley, 1965; Slide no. BG2 S1; EF L55. 2. Cyathidites australis Couper, 1953 Slide no. BGVN L2; EF Q56. 3. Gabonisporis vigourouxii Boltenhagen, 1967; Slide no. BGVN E4; EF Q52. 4. Aquilapollenites bengalensis Baksi and Deb ex. Samant et al., 2013; Slide no. BGVN 1C6; EF N-34/1. 5. Jiangsupollis sp.; Slide no. BGVN L4, EF 45/1. 6. Proxapertites sulcatus Jaramillo et al., 2011; Slide no. BGVN E4, EF R31/1.

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