late cretaceous

常見(jiàn)例句

"The ancient drainage systems are thought to have originated in the wet climate of the late Cretaceous, they are that old, " Hutchinson said.
Hutchinson說(shuō)，這些古老的排水系統(tǒng)是在白堊紀(jì)晚期爲(wèi)了應(yīng)付潮溼的氣候而被想到的，它們已經(jīng)是這樣的久遠(yuǎn)。
This story, though, raises the question of why there is but a single ejecta layer of iridium and shocked quartz in late Cretaceous rocks around the world.
然而，查特基博士的說(shuō)法引發(fā)了疑問(wèn)：爲(wèi)什麼全球白堊紀(jì)晚期巖石中含有沖擊石英和銥的噴發(fā)物地層衹有一層？答案或許是，兩次撞擊是在同時(shí)發(fā)生的。
Among its prey would have been insects, small mammals, amphibians and possibly small dinosaurs that lived in the swamps and forests of the late Cretaceous.
它所能捕食的獵物包括崑蟲(chóng)、小型哺乳動(dòng)物、兩棲動(dòng)物以及可能生活在沼澤和森林後白堊紀(jì)的小型恐龍。

These creatures lived more than sixty-five million years ago, during Earth's late Cretaceous period.
Scientists say it formed when high sea levels flooded the middle of North America, splitting the continent in two for millions of years during the late Cretaceous period.
The Tyrannosaurus lived in North America during the late Cretaceous Period.

One confounding factor is that the late Cretaceous was also a period of great volcanic activity.
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These devices are akin to the mammals of the late Cretaceous, ready to dominate the post-dinosaur world.
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My piece is set in the late Cretaceous period, 65 million years ago (give or take a few).
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