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Re: PLEUROCOELOUS VERTEBRAE IN SAUROPODS
Sauropod air-sacs where not for cooling, and probably not for structural
lightning either since giant mammals lack them. They were probably part of a
bird-like respiratory system. The main function was to draw air completely
through the lungs, overcoming the dead air space created by the super long
trachea. The thorough lung ventilation may have also increased aerobic
exercise capacity to elephant-like levels.