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News and Reviews – On the Jurassic boundaries

Integrated biostratigraphy across the Aalenian/Bajocian boundary of the Central High Atlas, Morocco

This work presents an integrated biostratigraphic study across the Aalenian/Bajocian boundary of the Central High Atlas of Morocco. The data that are the basis for this study were obtained from the region of Rich that is...

Autocyclic development of Oxfordian sponge-microbial bioherms from Central and Southern Poland

A study of Upper Jurassic sponge-microbial bioherms in Poland allow to recognise successive changes in bioherm facies. No-time related character of these changes proved for different bioherms excludes external mechanism...

Notes on the evolution of the ammonite families Aulacostephanidae and Cardioceratidae and the stratigraphy of the uppermost Oxfordian and lowermost Kimmeridgian in the Staffin Bay sections (Isle of Skye, Northern Scotland)

Detailed study of all the ammonite collections gathered by the authors in the Staffin Bay sections has resulted in minor changes in the distribution of ammonite taxa, and slight modification of the position of the Oxford...