Monotherium
| Monotherium Temporal range:  | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Mammalia | 
| Order: | Carnivora | 
| Parvorder: | Pinnipedia | 
| Family: | Phocidae | 
| Genus: | †Monotherium van Beneden, 1874 | 
| Species | |
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Monotherium is an extinct genus of phocid belonging to the subfamily Monachinae. It is known from fossils found in the middle to late Miocene of Belgium.