The Rhynie chert (Aberdeenshire, Scotland, UK) plant Horneophyton lignieri is likely one of the most studied elements Lower Devonian floras considering both macro and microremains. Intriguingly, while larger fragments are exceptionally fossilized, in situ spores not necessarily well-preserved chert: they dark brown intensively torn overall. However, spore masses often dominated by single spores...

Abstract The Mississippian (Tournaisian–Visean) of the Jbel Asdaf area in Tisdafine Basin (Eastern Anti-Atlas, Morocco) has been, for first time, subject a palynological study. This work aims to describe lithological and paleontological composition Aït Yalla Tinerhir Formations, then refine age, reconstruct paleoenvironment assess thermal maturity organic matter. studied section is subdivided, ...

Palynological study of Tungu Buzum Hill was investigated with a view towards determining the age outcrop, compare its miospore content adjacent Buzu Valley carbonaceous shale, their stratigraphic relationship and paleoenvironment deposition litho-sequence. Field involved litho-description logging achieved by noting rock type, mineralogical composition, bed thickness, texture, sorting, roundness...

The evolution of life on Earth has been interrupted by several mass extinction events. The Cretaceous-Tertiary (K-T) extinction [65 million years ago (Ma)] is associated with the impact of a large bolide (1). On the basis of extensive data (2–4), the K-T boundary is characterized by a palynological extinction horizon coincident with a geochemical marker bed commonly succeeded by a bed rich in f...