Endowed with an advanced auditory system, Parasaurolophus used its ability to communicate with complex low-frequency calls as a primary means of defense. Clash of the Dinosaurs: Duckbill Sound Machine More Videos Online

Clash of the Dinosaurs: Duckbill Sound Machine

Endowed with an advanced auditory system, Parasaurolophus used its ability to communicate with complex low-frequency calls as a primary means of defense.

Added: Dec 10, 2009
Views: 288190 Views
Runtime: 02:27

 
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