The Smithian-Spathian boundary (SSB) was related to a global physical–chemical alteration of ecosystems that led to a Lower Triassic biotic extinction in marine and continental environments. A recent approach to SSB in continental environments has demonstrated the existence of increased levels of acidity in the SSB of different western continental peri-Tethys areas coinciding with the absence of life or its drastic decrease. A...

The scarce evidence of paleontological records between the upper Permian and the Anisian (Middle Triassic) of Western Europe could reflect (1) large stratigraphic gaps in the continental successions and/or (2) the persistence of disturbed conditions after the Permian–Triassic Boundary extinction event and the succession of ecological crises that occurred during the Early Triassic. In this context, the study of palynological as...