Mammalia - Sirenia - Dugongidae

Alternative combinations: Felsinotherium serresii, Halitherium serresi, Halitherium serresii, Metaxytherium serresi

Synonym: Halitherium minor Cope 1883

Belongs to Metaxytherium according to D. P. Domning 1996

Sister taxa: Metaxytherium aquitaniae, Metaxytherium arctodites, Metaxytherium crataegense, Metaxytherium floridanum, Metaxytherium krahuletzi, Metaxytherium lovisati, Metaxytherium medium, Metaxytherium riveroi, Metaxytherium subapenninum

Type specimens:

• Metaxytherium serresii: none designated
• Halitherium minor:

Ecology: aquatic herbivore