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2300万年的生物并今海豹、海狮和海象的直系祖先,而来自另一个。
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2300万年的生物并今海豹、海狮和海象的直系祖先,而来自另一个。
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