Employed at the Natuurhistorisch Museum Maastricht since January 1991, John Jagt has been working on latest Cretaceous (Santonian-Maastrichtian) and early Paleogene fossils, mostly invertebrate, in an attempt to present a more complete picture of faunal assemblages in this part of Europe and compare taxa with those recorded from elsewhere in Europe and in North America. At certain occasions, he has also published on older (Jurassic, Early Cretaceous) and younger (Eocene, Miocene and Pliocene) material. Favourite groups are echinoderms, crustaceans (crabs, lobsters and barnacles), molluscs (bivalves, gastropods and cephalopods) and ichnofossils. From time to time, John has been involved in mosasaur excavations and in subsequent preparation, interpretation and publication of such finds. The close co-operation with Maastricht University and Natuurmonumenten will hopefully yield new opportunities, including future plans regarding our palaeontological/geological heritage (read: Sint-Pietersberg). For the journal Staringia, issued by the Nederlandse Geologische Vereniging, John will be editing a series (in English) on Late Cretaceous invertebrate and vertebrate fossils from Liège-Limburg – this should be seen as a well-illustrated identification guide. The plan is to issue two (or three) volumes between 2021 and 2025. The year 2024 is dear to us – we shall be celebrating the 175th anniversary of the introduction of the ‘système maestrichtien’ by André Dumont and organising a symposium as well as an international meeting on mosasaurs and other tetrapods.