[9] The first attempt to separate this group into its own genus was the genus Euchelymys (Gray, 1871),[10] but this name was subsequently synonymised with Elseya by Boulenger (1889)[6] and the name was made permanently unavailable when Lindholm (1929)[11] set Euchelymys sulcifera (= Emydura macquarii) as the type species, effectively making the name Euchelymys a junior synonym of Emydura.

Another option investigated was the fossil form Pelocomastes, de Vis 1897;[12] the species in this genus may have represented an extinct member of the latisternum group, but this was determined to be incorrect and the name Pelocomastes is now considered a junior synonym of Elseya.

[2] Currently, this arrangement is considered the accepted name for the latisternum group by the IUCN,[17] a single taxonomic checklist[16] and by numerous workers in diverse disciplines.

[18][19] In the ensuing time the name Myuchelys has established usage as defined by the ICZN code.

In 2017, the IUCN TTWG following the recommendation of Spinks et al. (2015) placed Flaviemys as a synonymy of Myuchelys.