The Turonian stage and substage boundaries (Bulletin de l'Institut Royal des Sciences Naturelles de Belqique, Sciences de la Terre, 1996)

(untitled) - Bengtson, P; Cobban, W; Dodsworth, P; Gale, A; Kennedy, W; Lamolda, M; Matsumoto, T; Reyment, R; Seibertz, E; Tröger, K