Can anyone help me identify these ordovician microfossil?

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Mahdhi Mosbah

excuse me i cann't

Hamed Ameri

I think that is posible algae

Anders Lindskog

Hi Ana,

I believe that it is a peripherally cut, ornamented/sculptured gastropod. Closely similar specimens occur in thin sections from the Middle Ordovician of Sweden.

I have attached an image in which several whorls are cut, for reference (sample from the lowermost Darriwilian, southernmost Sweden).

I think that is gastropod