Some authors,
Lucas, Mothé, Avilla et al., propose a reclassification of the South American gomphotheres as follows: •
Stegomastodon is an exclusively North American genus •
Haplomastodon is a South American genus, but synonymous with
Notiomastodon • as
Notiomastodon was
defined earlier, all
Haplomastodon species should be considered part of
Notiomastodon • all formerly described species as
Stegomastodon sp.,
Haplomastodon sp. and
Notiomastodon sp. belong to a single species;
Notiomastodon platensis •
Cuvieronius is the only remaining South American genus outside of
Notiomastodon Evolution •
Lucas (2010, 2013) proposes that
Notiomastodon evolved from
Cuvieronius inside South America == See also ==