“…2), such as sporadic driftwood Collins 1999, Donovan andJagt 2013), conifer foliage and seed cones (Van der Ham and Van Konijnenburgvan Cittert 2003, Van der Ham et al 2003, Ham et al 2010) and rare vertebrate remains, including both avian and non-avian dinosaurs and rare mammals (Jagt et al 2003, Martin et al 2005, Field et al 2020. The majority of these remains are considered to have been washed into the sea by rivers and transported over considerable distances, as driftwood and floating corpses, respectively (e. g., Jagt and Collins 1999). Within the Maastricht Fm., terrestrial material seems to be most prevalent in the basal part of the Gronsveld Mb.…”