With about 400 species it is considered a large genus.

If it is considered a distinct genus, the name Ereunetes would apply, first published in 1811.

Some authors consider it a valid genus in itself.

For nearly two hundred years they were considered a separate genus, having been published at that rank in 1810 by Robert Brown.

Rhyacosiredon used to be considered a separate genus within the family Ambystomatidae.

Its subgenus Neoplatymops has sometimes been considered a separate genus.

It was seen as a synonym for Oxyodes, but is now considered a separate genus.

Bowdleria is now considered a former genus once identifying the 2 species of Fernbird.

It was formerly considered a separate genus, but reclassified following a major revision by Frost et al. in 2006.

It was formerly considered a genus, but is now a subgenus of Euclidia.