As two voracious Deinonychus mount a frontal assault on the heavily armored nodosaur Sauropelta, a third Deinonychus prepares to attack from the stream bank at the rear.

• 白垩纪晚期有花植物繁盛起来，山核桃属、栎属和木兰属这些小的有花植物遍地盛开。白垩纪时期的恐龙种类比以往任何时候都多。