Abstract

The Sponges are restricted to rocks of Santonian and (mainly) Early Campanian age. The greater part of the fauna comprises badly preserved lithistids: Megamorines ( Doryderma roemeri) Tetracladines (we have attempted to study the fabrics of the radicular ‘appendages” in ( Jerea) Polypothecia); hypercalcified Sponges: Sclerospongia ( Verticillites cretaceus var. minor), Lithonines ( Porosphaera globularis), and Inozoa ( Corynella sp.). No hexactinellids have been recorded; in Charente this group appears only in the uppermost Campanian. It would appear that the climatic and/or bathymetric conditions changed at this time to give a colder depositional environment.

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