A bed-by-bed biostratigraphical study of two key Californian outcrop sections of the JurassiceCretaceous transition interval is presented. The studied succession is characterized by the occurrence of abundant buchiid ...

A taxonomic description of larger foraminifers of the genus Pseudosiderolites, from Upper Cretaceous beds in the Rostov Region that were previously assigned to the Paleogene, is provided for the first time. The beds with ...