Abstract
The family Parodontidae comprises three genera: Parodon, Apareiodon and Saccodon, including 32 species considered valid. These animals are distributed in South America and part of Panama, except in the South Atlantic coastal basin in the state of Bahia, Patagonia and the Amazon River channel. In general, the karyotype macrostructure of the family appears to be conserved, with a diploid nu…