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Is dinosaurian heart structure what kind of?
From;  Author:Stand originally
The dinosaurian heart fossil that in American Na Dake his city discovers makes clear, dinosaurian heart and avian the heart with mammal is similar, namely heart cent is 4 hearts antrum, be linked together with an aorta blood-vessel. The heart with such heart and reptile simpler structure is very different, show dinosaur to have independent systematic circulation and pulmonary circulation before one's death, the efficiency that its blood circulates is taller.