First record of Carinodens (Squamata, Mosasauridae) from the uppermost Maastrichtian of Stevns Klint, Denmark

Milàn, J., Jagt, J.W.M., Lindgren, J. & Schulp, A.S., November 2017. First record of Carinodens (Squamata, Mosasauridae) from the uppermost Maastrichtian of Stevns Klint, Denmark. Alcheringa XX, X–X. ISSN 0311-5518. Here we report on an important addition to the Late Cretaceous fossil record of marine reptiles from Denmark: a tooth crown of the rare durophagous mosasaur Carinodens minalmamar found in the uppermost Maastrichtian strata at the UNESCO World Heritage Site Stevns Klint. The tooth was found within the uppermost few metres of the Maastrichtian chalk placing it within the latest 50.000 years prior to the K/Pg boundary. The new find is a shed crown probably representing a tooth from the 11th to 13th position in the jaw. The tooth represents the northernmost occurrence of the genus Carinodens. Previous mosasaur finds from Denmark have all been from the hypercarnivorous mosasaurids Mosasaurus hoffmannii and Plioplatecarpus sp., thus our specimen adds a new trophic niche exploited by marine tetrapods in the food web of the latest Maastrichtian of Denmark. Jesper Milàn* [[email protected]], Geomuseum Faxe/Østsjællands Museum, Østervej 2, 4640 Faxe, Denmark; John W.M. Jagt [[email protected]], Natuurhistorisch Museum Maastricht, De Bosquetplein 6–7, 6211 kJ Maastricht, the Netherlands; Johan Lindgren [[email protected]], Department of Geology, Lund University, Sölvegatan 12, 223 62 Lund, Sweden. Anne S. Schulp† [[email protected]], Natuurhistorisch Museum Maastricht, De Bosquetplein 6–7, 6211 kJ Maastricht, the Netherlands. *Also affiliated with: Natural History Museum of Denmark, Øster Voldgade 5–7, 1465 Copenhagen K, Denmark. †Also affiliated with: Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, the Netherlands, and Faculteit Bètawetenschappen, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands.