Author: Hancock J.M., Kennedy W.J. & Klaumann H.,
Title: Ammonites from the transgressive Cretaceous on the Rhenish massif, Germany
Description: 1972. In 8vo, original wrappers, pp. 7 with 1 pl. and 1 fig. Offprint from Paleontology, 15(3)

Keywords: shells fossil ammonites paleontology geology