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Cretaceous - Wikipedia
a geological period that lasted from about 143.1 to 66 Ma (million years ago). It is the third and final period of the Mesozoic Era, as well as the longest. en.wikipedia.org
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The Cretaceous Period: What was Earth like before dinosaurs went ...
The Cretaceous is a geological period that began 145 million years ago and ended 66 million years ago. It is the last period in the Mesozoic Era. www.nhm.ac.uk
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Cretaceous Period | Definition, Climate, Dinosaurs, & Map - Britannica
The Cretaceous is the longest period of the Phanerozoic Eon. Spanning 79 million years, it represents more time than has elapsed since the extinction of the ... www.britannica.com
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cretaceous
cretaceous, a. and n. (kriːˈteɪʃəs) Also with cap. initial in Geol. senses. [f. L. crētāce-us chalk-like, chalky, f. crēta chalk: see -aceous.] A. adj. 1. Of the nature of chalk; chalky.c 1675 Grew (J.), The cretaceous salt. 1708 J. Philips Cyder i. 54 Nor from the sable Ground expect Success Nor fr... Oxford English Dictionary
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The Cretaceous Period
The Cretaceous is defined as the period between 145.5 and 65.5 million years ago,* the last period of the Mesozoic Era, following the Jurassic and ending with ... ucmp.berkeley.edu
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Cretaceous period: Animals, plants and extinction event - Live Science
The Cretaceous period was the last and longest segment of the Mesozoic era. It lasted approximately 79 million years. www.livescience.com
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Dinosaurs from the Early Cretaceous Period - Natural History Museum
Dinosaurs in the Early Cretaceous. (145 to 101 million years ago) 68 dinosaurs from the Early Cretaceous. Acrocanthosaurus. www.nhm.ac.uk
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Cretaceous Period Facts and Information | National Geographic
Tyrannosaurus rex arose during the Cretaceous period about 85 million years ago, and thrived as a top land predator until the dinosaurs went extinct. www.nationalgeographic.com
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Cretaceous Period—145.0 to 66.0 MYA - National Park Service
During the Cretaceous Period the first flowering plants appeared and rapidly diversified. Also, the Rocky Mountains began to rise from the Cretaceous Interior ... www.nps.gov
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Cretaceous Period - Students | Britannica Kids | Homework Help
The Cretaceous Period was the last of three geologic time periods in the Mesozoic Era. The Cretaceous began approximately 145 million years ago. kids.britannica.com
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cretaceous
cretaceous/krɪˈteɪʃəs; krɪ`teʃəs/ adj(geology 地质)1 of or like chalk 白垩质的; 似白垩的 cretaceous rock 白垩质的岩石.2 Cretaceous of the geological period when chalk-rocks were formed 白垩纪 Cretaceous fossils 白垩纪的化石. 牛津英汉双解词典
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The Cretaceous Period Facts & Info For Kids & Adults: The Ultimate Guide
Most pseudosuchians became extinct in the Jurassic-Triassic extinction event. This left the field open for the dinosaurs to become the dominant land animals in the Jurassic and Cretaceous periods. However, some pseudosuchians remained. Like the mammals, they had to find their own niches in which they could survive alongside the dinosaurs.
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Cretaceous Dawn
Cretaceous Dawn is a science-fiction novel by sibling scientists Lisa M. Graziano and Michael S. A. Its story is set to a modern time and also to the prehistory of 65 million years ago (at the end of the Cretaceous period). wikipedia.org
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Cretaceous Mongolia
Cretaceous Mongolia is one of the strangest and best preserved of all Mesozoic ecosystems. wikipedia.org
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Early Cretaceous
The Early Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. wikipedia.org
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