Could you help me in identifying these microfossils present in this thin section?

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Miroslav Bubík

The first section is perhaps unidentifiable nodosariid or rotaliid foraminifer. The second seems to be Ammonia ex. gr. beccarii L. (dark filled trochospiral one)

Sibelle Trevisan Disaró

Hi Swagata Chaudhuri

I don't know the species you have in the first image, but I agree with Bubík; it seems to be an Ammonia in the second image.

You seem to have framboidal pyrite depositions inside Ammonia's test.

Is it an anoxic environment?