The Takikawa sea cow (Hydrodamalis spissa) is an extinct herbivorous marine mammal of the Late Pliocene which was closely related to the recently extinct Steller's sea cow (H. gigas). In 1988, fossils of sea cows were discovered in Hokkaido and were originally assigned to the Takikawa sea cow, a newly described species, even though this taxon is thought of by some scientists as a synonym of the Cuesta sea cow (H. cuestae).
The Takikawa sea cow (Hydrodamalis spissa) is an extinct herbivorous marine mammal of the Late Pliocene which was closely related to the recently extinct Steller's sea cow (H. gigas). In 1988, fossils of sea cows were discovered in Hokkaido and were originally assigned to the Takikawa sea cow, a newly described species, even though this taxon is thought of by some scientists as a synonym of the Cuesta sea cow (H. cuestae).
Source: Wikipedia "Takikawa sea cow" · CC BY-SA 4.0
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