Omanitherium (meaning "Oman beast" in Ancient Greek) is an extinct genus of barytheriid proboscidean that lived during the early Oligocene in Oman. It belongs to the family Barytheriidae, which represented the first large size proboscideans to appear in the fossil record and were characterized by a strong sexual dimorphism.
A cladogram of Proboscidea based on the phylogenetic analysis of Hautier et al. 2021 is below:
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