Maastrichtian adherent foraminifera encircling clionid pores

A further example is described of attached arenaceous foraminifera coiled round surface pores of a clionid sponge boring. The substrate is an oyster, Pycnodonte vesicularis (Lamarck), the boring Entobia cretacea Portlock, the foraminifera Placopsilina cenomana d'Orbigny and Bdelloidina vincentownensis Hofker, and the age lowermost Upper Maastrichtian.