North American mastodon; in some classifications considered a mammoth rather than a mastodon.
北美洲的乳齿象；在一些分类中被当作猛犸而不是乳齿象。
The researchers say they have also done the first nuclear genetic analysis of the American mastodon.
研究人员说他们已经完成了首个美洲乳齿象的细胞核遗传学分析。
The researchers also made what they say are the first sequences of nuclear DNA from the extinct American mastodon.
据研究者说，他们还首次完成了已灭绝的美洲乳齿象细胞核DNA序列的测定。
The mammoths should not be confused with the American mastodon (Mammut americanum), another ancient elephant from North and Central America.
猛犸应该不会与生活在北美洲和中美洲的另一种古象——美洲乳齿象相混淆（Mammutamericanum）。
The researchers compared sequences of DNA from the nuclei of African and Asian elephants, and from woolly mammoths and the American mastodon.
研究人员对比了非洲象和亚洲象，以及来自猛犸象和美洲乳齿象的细胞核dna序列。
The ancestors of American Indians probably knew the mastodon.
美洲印第安人的祖先大概知道乳齿象。
The ancestors of American Indians probably knew the mastodon.
美洲印第安人的祖先大概知道乳齿象。
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