On the Cretaceous age of the so-called Jurassic cheilostomatous Polyzoa (Bryozoa). A contribution to the knowledge of the Polyzoa-fauna of the Maastrichtian in the Cotentin (Manche)
Published in Bulletin of the British Museum (Natural History). Geology., in 1968, in volume 17, issue 1, pages 1-45
Date published:1968-11-19