Fig. 3From: A report on palaeontological excavations and sampling in mudrocks: some guidelinesSurface appearance of weathered mudrocks of the Pliensbachian Amaltheenton Formation at Buttenheim (see Keupp et al., 2022). Only calcitic fossils and concretionary parts of other fossils survived, others decayed together with the mudstone to small chipsBack to article page