1. Geological setting and phytodiversity in Mexico; Cevallos-Ferriz, Sergio R. S. and Gonz lez-Torres, Enrique A. 2. Tertiary Palynofloristic correlations between Mexican Formations with emphasis in dating the Balsas Group; Mart nez-Hern ndez, Enrique and Ram rez-Arriaga, Elia. 3. Mesozoic Corals of Mexico; Filkorn, Harry F. 4. Rudists of Mexico: Historical Aspects and Selected Areas of Research; Garc a-Barrera, Pedro. 5. Mesozoic and Tertiary Decapod...