How long-necked dinosaur feeding?

Long-necked sauropod dinosaurs living in the Jurassic and Cretaceous. Early last century, sauropod dinosaur fossils were first discovered, its neck was described as nearly level. But recently discovered fossils were re-erected: the first is far higher than the ground it has a swan-like curve of the neck is almost perpendicular to the ground. It also raises awareness of how this dinosaur's blood circulation to provide blood to the head of the controversy, some researchers even think that it may have Duoge 心脏.

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