O’Gorman JP. The oldest elasmosaurs (Sauropterygia, Plesiosauria) from Antarctica, Santa Marta Formation (upper Coniacian? Santonian-upper Campanian) and Snow Hill Island Formation (upper Campanian-lower Maastrichtian), James Ross Island. POLAR [Internet]. 2012Oct.30 [cited 2024Jul.16];310. Available from: https://polarresearch.net/index.php/polar/article/view/2586