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The recently extinct Steller's sea cow was the largest known sirenian to have lived, reaching lengths of 10 metres (33 feet) and weights of 5 to 10 tonnes (5.5 to 11.0 short tons). [ 2 ] Sirenians have a large, fusiform body which reduces drag through the water and heavy bones that act as ballast to counteract the buoyancy of their blubber .
Steller's sea cow (Hydrodamalis gigas) is an extinct sirenian described by Georg Wilhelm Steller in 1741. At that time, it was found only around the Commander Islands in the Bering Sea between Alaska and Russia; its range extended across the North Pacific during the Pleistocene epoch, and likely contracted to such an extreme degree due to the glacial cycle.
It included the Steller's sea cow (Hydrodamalis gigas), the Cuesta sea cow (Hydrodamalis cuestae), and the Takikawa sea cow (Hydrodamalis spissa). The fossil genus Dusisiren is regarded as the sister taxon of Hydrodamalis: together, the two genera form the dugong subfamily Hydrodamalinae. [1]
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 ...
Skull and limb-bone. The Cuesta sea cow, like the Steller's sea cow, or even modern manatees, was probably gregarious and lived in small family groups for relative safety. . Their bones were dense, and served as a sort of “ballast” to prevent their large bodies from floating, a likely adaptation due to their constant grazing of seagrasses on the shallow ocean fl
The nebula is located 960 light-years away within a larger region of gas and dust called the Perseus molecular cloud. ... by a croc that sank its teeth into the sea cow’s snout before pulling it ...
Seacow or Sea Cow may also refer to: Sea Cow Island, British Indian Ocean Territory; Seacow Head Light, Canada; Seacow Pond, Prince Edward Island, Canada; Steller's ...
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