Sereno is a well-known paleontologist.

塞瑞诺是位知名的古生物学家。

They weren't racehorses, Sereno said, but they could move quickly.

他们不是赛马，Sereno说，不过他们能快速移动。

The fossil find shows some modern animal behavior has very old roots, Sereno said.

Sereno说这次化石的发现显示了一些现代的动物行为能追溯到远古时期。

"This is an early dinosaur blueprint," says Sereno, " with features they'll have for millions of years.

塞利诺说：“这是早期恐龙的蓝本，具有它们将保持几百万年的特征。

"This is an early dinosaur blueprint," says Sereno, "with features they'll have for millions of years."

塞利诺说：“这是早期恐龙的蓝本，具有它们将保持几百万年的特征。”