Base of the Toarcian Stage of the Lower Jurassic defined by the Global Boundary Stratotype Section and Point (GSSP) at the Peniche section (Portugal) by Da Rocha, R, Mattioli, E, Duarte, L, Pittet, B, Elmi, S, Mouterde, R, Cabral, M, Comas-Rengifo, M, Gómez, J, Goy, A, Hesselbo, S, Jenkyns, H, Littler, K, Mailliot, S, De Oliveira, L, Osete, M, Perilli, N, Pinto, S, Ruget, C, Suan, G