Plesielephantiformes is a proposed suborder of the Proboscidea, the group containing elephants and their close relatives. It was named and circumscribed in a 2001 study by Jeheskel Shoshani and colleagues to include Deinotheriidae, as well as Numidotheriidae and Barytheriidae. While originally proposed to represent a monophyletic clade, based on the supposed unifying character of having bilophodont teeth, most modern phylogenetic studies of Proboscidea find the group to be paraphyletic, with Deinotheriidae more closely related to Elephantiformes than to other supposed members of the group.

Cladogram after Hautier et al. 2021:

ProboscideaEritherium Phosphatherium Daouitherium Numidotherium Barytherium Arcanotherium Omanitherium Saloumia Moeritherium Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Eritherium
Phosphatherium Daouitherium Numidotherium Barytherium Arcanotherium Omanitherium Saloumia Moeritherium Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Phosphatherium
Daouitherium Numidotherium Barytherium Arcanotherium Omanitherium Saloumia Moeritherium Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Daouitherium
Numidotherium Barytherium Arcanotherium Omanitherium Saloumia Moeritherium Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Numidotherium
Barytherium Arcanotherium Omanitherium Saloumia Moeritherium Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Barytherium
Arcanotherium Omanitherium Saloumia Moeritherium Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Arcanotherium
Omanitherium Saloumia Moeritherium Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Omanitherium
Saloumia Moeritherium Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Saloumia
Moeritherium
Deinotheriidae Elephantiformes Dagbatitherium Palaeomastodon Phiomia Elephantimorpha
Deinotheriidae
ElephantiformesDagbatitherium Palaeomastodon Phiomia Elephantimorpha
Dagbatitherium
Palaeomastodon Phiomia Elephantimorpha
Palaeomastodon
Phiomia Elephantimorpha
Phiomia
Elephantimorpha