Triassic palynology of the Swiss Belchentunnel: a restudy of the Scheuring samples

Abstract Well-preserved Carnian (Late Triassic) palynomorphs are rare in Switzerland, despite sediments include one of the important plant fossil localities, Neue Welt near Basel. Modern detailed palynological studies on Triassic general and especially scarce, most were carried out more than 50 years ago. Nevertheless (Late) still yield surprises for research. Here, we present results re-study famous Belchentunnel samples that studied published by Bernhard Scheuring 1970. The less cheerful result concerns preservation slides: 60% slides degraded. On other hand, restudy well-preserved showed an unexpected number algae, acritarchs, spore taxa not described so far. Especially spores facilitate correlation with well-known biostratigraphic schemes established Germanic Basin. distribution Porcellispora longdonensis throughout succession is striking. acme just below Schilfsandstein might suggest presence ephemeral ponds.