Hyracotherium
- Hyracotherium所屬的單詞分類
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Animal / 動(dòng)物 [799]
woolly rhinoceros · woolly mammoth · woolly bear caterpillar · wild cat · western meadowlark · Umbrellabird · Treefrog · thresher shark · Swallowtail Butterfly · spiny lizard
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Mammal / 哺乳動(dòng)物 [255]
woolly rhinoceros · woolly mammoth · Red Wolf · placental mammals · humpback whale · Howler monkey · gray whale · bowhead whale · Bighorn sheep · bactrian camel
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A small, herbivorous, extinct mammal of the genus Hyracotherium from the Eocene Epoch of the western United States, having four-toed front feet and three-toed hind feet and related ancestrally to the horse.
始祖馬始新世產(chǎn)于美國(guó)西部的一種屬于蹄兔屬的哺乳動(dòng)物曰本人的三级视频，已滅絕一级特a片，體型小，食草被男人桶添插，前蹄四趾亚洲色图日韩无码一区二区，后蹄三趾，為馬的遠(yuǎn)祖
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eohippus：始祖馬屬
已絕滅的始馬屬(Hyracotherium)動(dòng)物,為馬的祖先,在早始新世(5,780萬(wàn)5,200萬(wàn)年前)在北美和歐洲繁榮興盛. 北美的種類以前單獨(dú)列為一個(gè)屬--始祖馬屬(Eohippus),但現(xiàn)將所有已知的曙馬類均歸入始馬屬.