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My Story about Dinosaurs.
by: XIOMARA R., Grade: 3


The Triassic!
The earliest dinosaurs and mammals date pack to the late triassic period,about 225 million years ago.Meat-eaters(20 foot long plant eating dinosaurs.)
The Jurassic!
The Jurassic period began about 200 millipn years ago and lasted about 55 million years.Meat-eater.The first bird (and bird-like dinosaurs) also appeared during the Jurassic period.
The Cretaceous!
The Cretaceous period began about 145 million years ago and ended 65 million years ago with the extinction of the dinosaurs.Flowering plants and modern insects appeared.Dinosaurs of all shapes and sizes walked the land,including duck bills,armored horned,and domeheaded dinosaurs.There were new forms of giant meat-eaters,as well as a deadly new breed of hunter,the



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