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http://www.infoplease.com/encyclopedia/science/cretaceous-period-historical-geology-period.html http://www.livescience.com/29231-cretaceous-period.html http://paleobiology.si.edu/geotime/main/htmlversion/cretaceous3.html http://en.wikipedia. (More)
The Cretaceous period
The Cretaceous began 145,000,000 years ago. It ended 65,000,000 years ago when a giant meteorite hit earth. More)
Cretaceous Dragonfly Fossil
Lower Cretaceous Late Aptian-Cenomanian (108-92 million years ago)   (More)
A Time When Beasts Ruled the Earth
The Jurassic period started 200 m.y.a and ended 145 m.y.a meaning it lasted 55 million years. At the beginning of the jurassic period the Earth\'s continents w (More)
(Triassic).
The turtles are ectothermic. A turtle from 220 million years ago, it is a more ancient group than lizards, snakes or crocodiles. Some are highly endangered.Turtles are classified as amniotes, along with reptiles, dinosaurs (including birds), and mamm (More)
Cretaceous Period
  The Cretaceous Period was the last and the longest segment of th (More)
Triassic Period
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The Triassic Period
Picture found on: blog.canacad.ac.jp   Absolute Date: 251-200 million years ago Geology and Tectonics: Pangaea- The supercontinent that occupied Eart (More)
The Cretaceous Period
archaeologynewsnetwork.blogspot.com ogparadise.attivoforum.com     *Noted for being the late portion of the \"Age of Dinosaurs\". *It is duri (More)
Cretaceous period
It started 145 million years ago and ended 65 million years ago. Geology: The name Cretaceous came from the Latin root \"creta\" which means chalk and was named by geologist Jean d\'Omalius d\'Halloy for the many beds of chalk that was found in t (More)
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