1405-3322 1405-3322 S1405-33222018000200351 10.18268/bsgm2018v70n2a5 Mexico 00 00 2018 00 00 2018 70 2 351 359

1987 Santa Cruz de la Sierra, Bolivia 532-47 1976 55 154-8 2013 3 1 1 51-8 1943 116 116 1-13 2002 136 685-714 2007 24 197-215 2009 1998 439-62 1990 255-99 2002 22 110-21 2015 171-84 2015 57 39-48 2014 501-7 2007 67-72 2007 155-68 2000 318 71-98 1996 609-51 2010 93 64-6 1995 82-93 2012 62 147-58 1949 1 79-156 1994 1-86 1940 28 363-746 2007 309-14 1966 1964