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	 Steller's sea cow (Hydrodamalis gigas), extinct
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| Subject: | Steller's sea cow (Hydrodamalis gigas), extinct 
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Upload Date: 2017:02:24 10:21:48 | 
| Description
 English: Steller's Sea Cow
 Date	1893
 Source	Extinct monsters : A popular account of some of the larger forms of ancient animal life
 Author	Hutchinson, H. N. (Henry Neville), 1856-1927
 Source: https://commons.wikimedia.org/wiki/File:Extinct_Monsters_(1893)_Sea_Cow.png
 
 Steller's sea cow (Hydrodamalis gigas) is an extinct species of sirenian that was found exclusively around the Commander Islands at the time of their discovery, which are situated in the Bering Sea between Alaska and Russia. Its closest living relative is the dugong (Dugong dugon), which is the sole surviving member of the Dugongidae, of which Steller's sea cow was also a part. It was among the largest mammals other than whales to have existed into the Holocene epoch, reaching weights of 8–10 metric tons and lengths of 9 metres. Order:	Sirenia, Family:	Dugongidae, Subfamily:	Hydrodamalinae, Genus:	Hydrodamalis, Species:	Hydrodamalis gigas Zimmermann, 1780
 Synonyms:
 Hydrodamalis stelleri Retzius, 1794
 Rytina manatus borealis Illiger, 1811
 Rytina borealis Illiger, 1815
 Rytina cetacea Illiger, 1815
 Rytina stelleri Desmarest, 1819
 Rytina borealis Cuvier, 1836
 Rytina stelleri Burmeister, 1837
 Rytina gigas Gray, 1850
 Manati gigas Zimmermann, 1780
 Manati balaenurus Boddaert, 1785
 Manati borealis Link, 1795
 Trichechus manatus borealis Gmelin, 1788
 Trichechus borealis Shaw, 1800
 Sirene borealis Link, 1794
 Nepus stelleri Fischer, 1814
 Stellerus borealis Desmarest, 1822
 Haligyna borealis Billberg, 1827
 Manatus gigas Lucas, 1891
 
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 |  |  | Guest |  |  | Scientific Name:	Hydrodamalis gigas (Zimmermann, 1780) Common Names:	Steller's Sea Cow, great northern sea cow
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