San Gregorio Formation  search
RTBaja California Sur Mexico
 Brazil
 Lower Permian
 Mexico
 Miocene
 Oligocene
 Parana Basin
 Pliocene
 Purisima Formation
 California
 Upper Carboniferous
 Uruguay
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