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。
Paul C. Sereno, a paleontologist at the University of Chicago, has fun naming the fossil crocodiles he dug up from the Sahara.
保罗·c·赛雷诺是芝加哥大学的古生物学家，以给他在撒哈拉沙漠挖出的鳄鱼化石起外号为乐。
Sereno is a well-known paleontologist.
塞瑞诺是位知名的古生物学家。
Paul Sereno, a paleontologist at the University of Chicago, adding the toe claw to the skeleton of the new tyrannosaur Raptorex.
芝加哥大学古生物学家PaulSereno正在给新发现的Raptorex暴龙的骨架上摆上脚爪。
"It's a stunning, once-in-a-lifetime find," said paleontologist Paul Sereno of the University of Chicago, who was not involved in the study.
未参与研究的芝加哥大学古生物学家PaulSereno表示：“这是个惊人的绝世发现。”
"It's a stunning, once-in-a-lifetime find," said paleontologist Paul Sereno of the University of Chicago, who was not involved in the study.
未参与研究的芝加哥大学古生物学家PaulSereno表示：“这是个惊人的绝世发现。”
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