How many are there in a book? when did generic latanoprost become available Gerardo Carbot, director of Chiapas's Paleontology Museum said, "The fossil specimens found in the state date back a minimum of 23 million years because that is the age of the amber that is extracted from deposits in the municipalities of Simojovel, Huitihupan, El Bosque, Pueblo Nuevo, Palenque, Totolapa and Malpaso."