Throwback Thursday -Remember when dinosaurs roared?

The first time I read that dinosaurs probably squawked or sounded like large species of birds, I laughed. A lot. I dismissed it quite easily. It seemed ridiculous and besides, how could we really know what they sounded like? Soft tissue does not preserve as easily as bones. What proof was there? Then as I studied evolution deeper in university I realized, what proof was there that dinosaurs roared ferociously then?

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