Saurischia�|Sauropodomorpha�@�T

Sauropoda

�@ "heavy reptile"

Barosaurus lentus Naming peron Marsh/ 1890 Neosauropoda�^Diplodocimorpha�^Diplodocoidea�^Diplodocidae�^Diplodocinae 20 m to 27 m long / Morrison Formation of Utah and South Dakota Jurassic Late

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