Latitude affects continental acidity in the Smithian-Spathian boundary biotic crisis

Barrenechea, Jf; Borruel-Abadía, V; Galán-Abellán, Ab; López-Gómez, J; Esterle, J; Mccann, T; De La Horra, R; Ronchi, A; Gianolla, P; Luque, Fj; Rossi, Vm; Paterson, N; Smith, Rmh; Wolvaardt, D; Brookfield, Me; Bourquin, S; Ubide, T.