Comments on the identification of Ammonites planula Hehl in Zieten, 1830 (Upper Jurassic, SW Germany)

Ammonites planula Hehl in Zieten, 1830 is the type species of the Late Jurassic ammonite genus Subnebrodites Spath, 1925 and the index species of the well-established Planula Zone of the Submediterranean Province. Recent...

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...

Sołtyków, Poland – an unique palaeoecological record ot the Early Jurassic continental deposits

The Sołtyków exposure is an old, long time abandoned clay pit. This exposure became known as a classical outcrop of alluvial-lacustrine deposits. Floral remains point to the earliest Jurassic (Lias α1-2) age, and the se...

News and Reviews – Comments on “New aragonite 87Sr/86Sr records of Mesozoic ammonoids and approach to the problem of N, O, C and Sr isotope cycles in the evolution of the Earth” by Yuri D. Zakharov, Sergei I. Dril, Yasunari Shigeta, Alexander M. Popov, Eugenij Y. Baraboshkin, Irina A. Michailova and Peter P. Safronov [Sedimentary Geology, 364 (2018): 1–13]

Comments are provided on a published paper on 87Sr/86Sr records of Mesozoic ammonoids [Yuri D. Zakharov, Sergei I. Dril, Yasunari Shigeta, Alexander M. Popov, Eugenij Y. Baraboshkin, Irina A. Michailova, and Peter P. Saf...

News and Reviews – Newsletter of the International Subcomission on Jurassic Stratigraphy: Foreword