Labels:bag | bird | box | bulletin board | chat room | dialog box | food | hakham | plant | shelf | sky OCR: Microsor Diinosaurs TImeLine S The history of the Earth is divided into large blocks of tirne called eras. All dinosaurs lived during the Mesozoic era and although it lasted for more than 160 million years, the Mesozoic era was small portion of the Earth's Eartl history ras are further divided into smaller blocks of time called periods. There were three periods during the Mesozoic era each with its own dinosaurs. MR Cambrian Ordovician Silurian Devonian Carboniferous Permian 4,500-570 570-500 500-430 430-395 395-345 345. -280 280-245 Million Years ACo MFSOZOIC FRA CIOZONOD ERA Triassic Cretaceous Paleocene Eocene Olicocene Miocene Pliocene Pleistocene Holcene 245-208 208-145 145-65 64-54 54-38 38-26 26-7 7-2 2m-10,000 Today Million Yeaw ACo Contents Farnilies indey Back Options Microsof ti ...