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生物并不如今豹、狮和象直系祖先,自另一个分支。
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Finally, " transient" killer whales, each up to 8 metres in length, are found across both shallow and deep coastal waters and pursue marine mammals, including cetaceans (whales and dolphins), as well as pinnipeds (sea lions and seals).
“过客鲸”的长度可达8米,分布在沿海浅区和深区,捕食海洋哺乳动物,包括鲸目动物(鲸鱼和海豚)以及鳍足类动物(海狮和海豹)。