The great size and especially the towering height of the sauropod dinosaurs may have required extra-high- pressure,oversized hearts that consumed much more oxygen than is observed in reptiles.

• 庞大的体形与塔一样的高度说明蜥晰脚类恐龙需要特别高的血压，消耗大量氧气的特大型心脏，这些都与一般的爬虫类不同。