Stratigraphy and paleontology of the Callovian in the southern and western margins of the Holy Cross Mts

Abstract

The CaIlovian biostratigraphy of the southern and western margins of the Holy Cross Mts is discussed in detail. The presence has been observed of all the Callovian zones, excepting the M. macrocephalus referable to a stratigraphic gap. The documented zones abound in a rich ammonite fauna, occurring as a rule in nodular or conglomeratic sediments which display stratigraphic condensation, and often contain a mixture of ammonite remains from more than one zone. Some ammonite species of stratigraphic value are described and figured in the chapter on paleontology. Particular attention has been given to species from genus Peltoceras, so far not described or figured in the Polish literature.