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1·Other dinosaurs that lived at the same time were Tyrannosaurus Rex and Deinonychus.

其它生活在这个时期的恐龙有霸王龙和恐爪龙。

2·Deinonychus, or terrible claw after the sickle-shaped talon on each hind foot, stood about 11 feet from head to tail and was a lithe predator.

这种被称为恐爪龙(Deinonychus)的恐龙后足上存在镰刀般的利爪，从头到尾的身长约为3.3米，是一种非常敏捷的掠食者。