Boreal-Tethyan biogeographical ecotone setting in Europe during Jurassic-Cretaceous transitional time on the base of Mollusca

by Zakharov, V.A, Rogov, M.A
Source: 1. Geologica carpathica 1. 1335-0552 1. Roč. 53, zvláštne č. (2002), s. 79-81