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Manatees (/ ˈ m æ n ə t iː z /, family Trichechidae, genus Trichechus) are large, fully aquatic, mostly herbivorous marine mammals sometimes known as sea cows.There are three accepted living species of Trichechidae, representing three of the four living species in the order Sirenia: the Amazonian manatee (Trichechus inunguis), the West Indian manatee (Trichechus manatus), and the West ...
Steller's sea cow was the largest known sirenian to have lived, and could reach lengths of 9 metres (30 ft) [41] and weight of 8 to 10 tonnes (8.8 to 11.0 short tons). [44] A dugong's brain weighs a maximum of 300 grams (11 ounces), about 0.1% of the animal's body weight. [ 33 ]
The earliest known sea cows, of the families †Prorastomidae and †Protosirenidae, were both confined to the Eocene, and were pig-sized, four-legged, amphibious creatures. [19] The first members of Dugongidae appeared by the middle Eocene. [20] At this point, sea cows were fully aquatic. [19] Pinnipeds split from other caniforms 50 mya during ...
The dugong (/ ˈ d (j) uː ɡ ɒ ŋ /; Dugong dugon) is a marine mammal.It is one of four living species of the order Sirenia, which also includes three species of manatees.It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow (Hydrodamalis gigas), was hunted to extinction in the 18th century.
Commercial hunting lead to the extinction of Steller's sea cow and the Caribbean monk seal. [ 36 ] [ 37 ] After commercial hunting ended, some species, such as the gray whale and northern elephant seal, [ 38 ] [ 39 ] have rebounded in numbers, however the northern elephant seal has a genetic bottleneck ; [ 39 ] conversely, other species, such ...
A rare fossil has provided a snapshot of what was an exceptionally unlucky day for a prehistoric sea cow. The now-extinct species of dugong, a manatee-like marine mammal, was swimming in the sea ...
Sea Otters are one of the cutest animals on the planet. Here are some of facts that will make you fall in love with them all over again. SEE ALSO: These tiny bats look just like cotton balls 1.
Polar bears, for example, tend to attack and sometimes eat humans, especially when hungry, and most other animals there are scary in one way or another. In this manner, reindeer stand out as true ...