The 23 million-year-old creature was not a direct ancestor of today's seals, sea lions and walruses, a group known collectively as pinnipeds.
这只2300万年的
物并不是如今
豹、狮
的直系祖先，而是来
另一个分支。
The 23 million-year-old creature was not a direct ancestor of today's seals, sea lions and walruses, a group known collectively as pinnipeds.
这只2300万年的物并不是如今豹、狮的直系祖先，而是来另一个分支。
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