Medical Scanner Reveals Dino Heart 扫描恐龙心脏

The heart: A a grapefruit-sized, reddish brown clump

这个心脏是柚子大小的棕红色化石

The first ever fossilised dinosaur heart has been discovered by scientists in the US.

It was found in the remains of a 66 million-year-old creature dug up in South Dakota.

The researchers used a computer tomography (CT) scanner to investigate the organ. The study shows the dinosaur, nicknamed "Willo", to have a four-chambered heart more akin to a human or a bird than a lizard.

The findings, the scientists claim, suggest the beast's circulatory system was more advanced than that of reptiles, and supports the hypothesis that many dinosaurs were warm-blooded animals.

美国科学家日前对第一次发现的恐龙心脏化石进行了深入研究。

这个心脏化石是在南达科塔发掘的一只6600万年前的恐龙化石中发现的。

研究人员使用了一部电子扫描仪对这个心脏进行了扫描，结果表明这只绰号为“Willo”的恐龙具有四个心室，在这一点上它更像人类或鸟类，而不像蜥蜴类爬行动物。

科学家们称此项发现表明了这种恐龙的循环系统比蜥蜴要先进的多，并且有力支持了关于许多恐龙是温血动物的推断。