Prorastomus

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iProrastomus Fossil range: Mid Eocene
Conservation status
Extinct (fossil)
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Sirenia Family: Prorastomidae Genus: Prorastomus Species: P. sirenoides
Binomial name
Prorastoma sirenoides Owen, 1855

Prorastoma sirenoides is an extinct species of sirenian.

While modern sirenians are fully aquatic, the 1,50 m (5 ft) Prorastoma was predominantly terrestrial, possessing stout legs and a long tail. Judging from its crown-shaped molars and the shape of its snout, it fed on soft plants.