Zealandiatherium

Saint Helena Manatee (Allodugong helenaensis) The Saint Helena manatee finds itself in a class of its own in a number of ways - it was the only truly endemic mammal of its native island, and thus technically its largest endemic species by a very significant margin, but it wasn’t actually that closely related to any modern manatee - in fact, its closest relatives were the dugong and halicore of the Indo-Pacific, likely descended from the Oligocene-Pliocene Metaxitherium. Even then, however, these island endemics retained a trait unseen in any other member of the clade - namely, they were omnivorous. Measuring from seven to ten feet long and weighing between 700 and 1,000 lbs, the Saint Helena manatee was fairly typical of a dugong in its appearance, with a longer sleeker body than a manatee and a whale-like fluked tail. They were a pale sandy yellowish-tan color, often mottled with green from crusting algae; the flippers were unusually large and muscular, with males sporting jutting