San Gregorio Formation  search
RTOligocene
 Pliocene
 Miocene
 Lower Permian
 Mexico
 Brazil
 California
 Parana Basin
 Baja California Sur Mexico
 Upper Carboniferous
 Uruguay
 Purisima Formation
SNMember of Purisima Formation, S California and Baja California Sur Mexico. ?Pliocene or Oligocene-Miocene. Also occurs in ?Lower Permian or ?Upper Carboniferous of the Parana Basin, Uruguay and Brazil. Indexed with age as applicable. Added to Thesaurus in