South American common toad be found in disturbed areas. As of 2013, there were 16 formally described species within this complex, as well as an unknown number that are yet to be recognized. South American common toad The South American common toad (Rhinella margaritifera; also mitred toad, in Spanish sapo crestado) is a species complex of toads in the family Bufonidae. They are found throughout the Amazonian South America (Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela) and eastern Panama. It was originally believed to be a single species, but is now known to represent a complex of more than one.
Guiana Shield Guiana Shield The Guiana Shield is one of the three cratons of the South American Plate. It is a 1.7 billion-year-old Precambrian geological formation in northeast South America that forms a portion of the northern coast. The higher elevations on the shield are called the Guiana Highlands, which is where the table-like mountains called tepuis are found. The Guiana Highlands are also the source of some of the world's most spectacular waterfalls such as Angel Falls, Kaieteur Falls and Kuquenan Falls. The Guiana Shield underlies Guyana (previously British Guiana), Suriname (previously Dutch Guiana) and French Guiana (or Guyane), most of