Description: Dinosaurs first appearedin the triassic period of time about 230 million years ago One of the dinosaurs in that period is the Lystrosaurus whose skeleton is seen here Before Jurassic World there was Triassic httpsenwikipediaorgwikiTriassic
By: JonPhillips
Date: 2015-06-25
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Triassic Period Lystrosaurus sourced from Openclipart is licensed under CC0 1.0
* Note: Date might not match original source and might be an educated guess.