什么是北美洲的一些灭绝动物？(some extinct animals of north america?)
像其他地方一样，北美的许多动物在上一个冰河时期结束后不久就灭绝了，大约在12000年前。 人类被认为是原因。 其他动物在几百万年前的更新世就灭绝了。 其中许多是大型动物，被称为巨型动物。 北美的巨型动物几乎没有幸存下来--一些例子包括熊和美国野牛。 在所有从北美灭绝的动物中，大多数是在人类越来越多时就灭绝了。
Some of the fascinating extinct animals that lived in North America include the American Lion, which is the largest subspecies of lion ever to have existed, and is 25% larger than the African lion (extinct 8000 BC); the Ancient Bison, which was the most numerous large herbivore for 8,000 years until it went extinct around 8000 BC; Cuvieronius, a large elephant with spiral tusks (extinct 7000 BC); the Dire Wolf, a large wolf that went extinct in 8000 BC; the Giant Beaver, with a length of up to 2.5 m (8.2 ft) that lived around the Great Lakes until 10,000 years ago; and the Giant Hutia, a rodent that could grow to the size of bears, which lived in Puerto Rico until just 3,000 years ago. Except for the Ancient Bison and the Dire Wolf, few of these extinct animals have living relatives.
还有许多来自北美的灭绝动物。 巨型短面熊，是有史以来最大的熊，高七英尺，长十英尺（公元前10500年灭绝）；Glyptodon，一种类似犰狳的装甲动物，大小和大众汽车的虫子差不多，最初在南美洲进化，但移到了德克萨斯州；著名的剑齿虎，是更新世北美的顶级掠食者；著名的长毛象，具有适应冰河时代生活的能力，经常在加拿大永久冻土中发现，还有美洲猎豹，这种类似猎豹的动物与现代美洲豹关系更为密切，目前只从骨骼碎片中得知。
在北美数亿年的自然历史中，还有许多其他已灭绝的动物，但本文只涉及最近灭绝的动物。
- 发表于 2022-02-09 13:45
- 阅读 ( 76 )
- 分类：科学
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