Can anyone help me to determine the genus of these two rudist valves on the first picture.

In my opinion, the valve to the left, corresponds to a radiolitidae. The other on the right, belongs to hippuritidae genus.

the second picture corresponds to the same sample.

these samples correspond to shallow marine limestone of Turonian-coniacian age, collected from tunisian outcrops (Central southern of Tunisia).

Thank you in advance

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