''Dioplotherium'' is an extinct genus of

mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...

known from Neogene deposits in the southeastern United States.

Taxonomy

''"Halianassa" allisoni'', described by Kilmer (1965) from remains found in the middle Miocene Isidro Formation of Baja California, Mexico, and known from marine deposits in Baja California and California, has been referred to ''Dioplotherium'' by some authors (e.g. Domning 1989, 1996). However, recent cladistic studies find the taxon distantly related to the ''Dioplotherium'' type species, and specimens from Brazil attributed to ''allisoni'' appear to be a distinct species instead.Jorge Velez-Juarbe & Aaron R. Wood (2019): An early Miocene dugongine (Sirenia: Dugongidae) from Panama, Journal of Vertebrate Paleontology,

References

Miocene sirenians Fossil taxa described in 1883 Prehistoric placental genera {{Paleo-sirenian-stub