古风时期 Archaic Greece ; Archaic Period ; Archaic ; the archaic age
古典时期 Classical age ; classic period ; classical period ; Classical times
中古时期 THE MIDDLE AGES
古王国时期 Old kingdom of egypt
远古时期 Age of Teras
上古时期 Ancient times ; The classical era ; Ancient Era
晚期古代 late antiquity
古怪的星期三 Wacky Wednesday
古代晚期 Late Antiquity
宇宙在每一个“万古期(世代)”伊始的体积为零并保持高度均匀形态。
Each aeon starts off with the universe being of zero size and high uniformity.
在残骸中，罕有幸存的同一时期陆地生物的碎片，包括部分松树和一种爬行动物古蜥的牙齿。
Among the remnants are rare fragments of land life that survived the same period, including part of a conifer plant and the tooth of an archosaur reptile.
始新世时代为古新代的后一时期，它存在于距今五千六百万年以前；据称，就是在这个时期哺乳动物的祖先的进化该是趋于多样化的。
It was during the Eocene, which began 56m years ago, following the Palaeocene, that the ancestors of mammals around today are supposed to have diversified.
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