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In the early Cretaceous, approximately 130 million years ago, there was a major diversification of angiosperms that set in motion a large evolutionary change in high paleolatitude forest composition. The diversification of angiosperms is in close connection with pollen and nectar collecting insects.
The Cretaceous (IPA: / k r ɪ ˈ t eɪ ʃ ə s / krih-TAY-shəss) [2] is a geological period that lasted from about 143.1 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest.
A cupressaceous conifer closely related to Cupressinocladus. Common. Elatocladus. Elatocladus sp, [132] A taxodioid leaf morphogenus [132] Elatides. E. longifolia. Araucaria-like or Cunninghamia-like conifer. Less common in the lower 2/3 but more common in the upper 1/3 of the Hell Creek Formation. [132] Glyptostrobus: G. europaeus. Uncommon ...
The Cretaceous is characterized by warm global temperatures caused by the high amounts of carbon dioxide and possibly methane greenhouse gases in the atmosphere. This caused a lack of permanent ice coverage in the polar regions, though the carbon dioxide level dropped between 115 and 66 million years ago (mya), possibly allowing some permanent ice cover.
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Of Ants and Dinosaurs (simplified Chinese: 当恐龙遇上蚂蚁; traditional Chinese: 當恐龍遇見螞蟻; pinyin: dāng kǒnglóng yùjiàn mǎyǐ), also known as The Cretaceous Past (simplified Chinese: 白垩纪往事; traditional Chinese: 白堊紀往事; pinyin: báièjì wǎngshì), is a science-fiction novel by Chinese writer Liu Cixin, first published in 2004 (as a novella) and ...
Many dinosaur species in North America during the Late Cretaceous had "remarkably small geographic ranges" despite their large body size and high mobility. [3] Large herbivores like ceratopsians and hadrosaurs exhibited the most obvious endemism, which strongly contrasts with modern mammalian faunas whose large herbivores' ranges "typical[ly] ... span much of a continent."
Araucaria (/ æ r ɔː ˈ k ɛər i ə /; original pronunciation: [a.ɾawˈka.ɾja]) [2] is a genus of evergreen coniferous trees in the family Araucariaceae.While today they are largely confined to the Southern Hemisphere, during the Jurassic and Cretaceous they were globally distributed.