The maps are thought to depict recent discoveries from the
fourth voyage of Columbus,
Pinzon–Solis voyage,
Vespucci voyages to South America,
Corte-Real voyages to Labrador, and
Gama–
Cabral voyages to Africa and the Indian Ocean. The nomenclature of Central and South America, in particular, 'is infinitely richer and more complete than any other map of the Americas known to us until those of
Diego Ribeiro of 1527 and 1529.' Denucé showed the maps included, without omission, all toponyms from the Pinzon–Solis voyage, the
Peter Martyr map, and still 'dozens more whose precise source is unknown.' Stevenson suggested the atlas might be 'not only the oldest known Portolan Atlas on whose charts any part of the New World is laid down, but the oldest known atlas in which the coast regions of a very large part of the entire world are represented with a fair approach to accuracy.' David W Tilton deemed it the earliest known map to 'show a coastline west of
Hispaniola that is recognisable as part of Central America.' Arthur Davies concluded the atlas 'provides in its charts of the world the first complete and up to date summary of Portuguese and Spanish explorations to that time.' Stevenson notes a 'striking resemblance' of the Indian subcontinent and Far East charts to relevant portions of the
Cantino,
Canerio, and
Waldseemüller Carta Marina maps. Siebold notes the maps seem to imply that the Americas are joined onto Asia, which concept 'is utterly different from Portuguese cosmography and maps,' thereby suggesting 'a Spanish and not a Portuguese origin.' Simonetta Conti similarly notes, 'it is clear that they [the mapmaker] must have been very familiar with the work of the
Padron Real's first authors, as can be seen from the large number of toponyms stretching from the area near
Yucatan to the lands of Santa Cruz.' == See also ==