虎鲸的祖先是什么？
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解决时间 2021-05-07 14:57
- 提问者网友：了了无期
- 2021-05-07 11:53
虎鲸的祖先是什么？
最佳答案
- 五星知识达人网友：北方的南先生
- 2021-05-07 12:52
虎鲸於上新世己出现,现今虎鲸有一种绝种近亲-Orca citoniensis
Orca citoniensis 生存於500万年前~200万年前,现今虎鲸Orcinus orca於250万年前出现,Orca citoniensis 比现时虎鲸体型小,但牙齿跟虎鲸相似,很大机会是现时虎鲸Orcinus orca的祖先。
Numerous large fossilized teeth, primarily from the Pliocene (two to five million years ago), are thought to be those of O. orca or a closely related species. One such species, O. citoniensis, is an extinct whale that had a higher tooth count and smaller size compared to modern killer whales.
Orca citoniensis 生存於500万年前~200万年前,现今虎鲸Orcinus orca於250万年前出现,Orca citoniensis 比现时虎鲸体型小,但牙齿跟虎鲸相似,很大机会是现时虎鲸Orcinus orca的祖先。
Numerous large fossilized teeth, primarily from the Pliocene (two to five million years ago), are thought to be those of O. orca or a closely related species. One such species, O. citoniensis, is an extinct whale that had a higher tooth count and smaller size compared to modern killer whales.
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- 1楼网友：不如潦草
- 2021-05-07 13:48
走鲸
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