Abstract | The Vossenveld Formation exposed in the Winterswijk quarry (eastern Netherlands) was formed along the western border of the Triassic Germanic Basin and preserves a diverse fauna in marginal marine environments. Discovered fossils include diverse marine reptiles, amphibians, fi shes, various invertebrates, as well as trace fossils and plants. The Winterswijk paleofauna is the only well-documented marginal marine ecosystem recorded in the early part of the Triassic, providing us with a precious opportunity to understand ecosystem evolution after the Permo-Triassic mass extinction.