Such a predator would have been unable to take on an adult ornithopod.

这样的掠食本不能捕食头成年鸟脚亚目食草恐龙。

That is certainly large enough to take on an adult ornithopod.

大到足以捕杀头成年鸟脚亚目食草恐龙。

Most, but not all, were ornithopods.

绝大部分鸟脚亚目食草恐龙。

Bigger, three-toed footprints came from large-bodied, two-legged plant-eaters called ornithopods or perhaps, the researchers say, a large theropod.

研究人员说，更大的、三趾的脚印来自体型庞大的两腿植食动--鸟脚类动，或种大型兽脚类动。

They wanted to see whether a theropod could have made the large tracks, or whether it was an ornithopod.

他兽脚类动否可以留下大足迹，或它否鸟脚类动。

There were teeth, vertebrae, and limb bones from the ornithopod Iguanodon.

有鸟脚类禽龙的牙齿、脊椎骨和四肢骨。

Admontosaurus and Iguanodon were both ornithopods.

Admontosaurus 和 Iguanodon 都鸟脚类动。

Which of these animals are ornithopods?

以下哪些动鸟脚类动？

The Cretaceous equivalent of zebra and antelopes-the victim species in every wildlife documentary about the dramas of the African savannah-were herbivorous dinosaurs called ornithopods.

白垩纪被称为鸟脚亚目食草恐龙其地位相当于斑马和羚羊--每部有关非洲大草原的纪录片中被捕杀的种群。

The most common tracks were given the ichnogenus name Wintonopus and are thought to have been made by small ornithopod dinosaurs.

最常见的足迹被命名为 Wintonopus，被认为由小型鸟脚类恐龙制造的。

Instead, they looked like the tracks of a large ornithopod, like Muttaburrasaurus, which is known from other sites in Australia.

相反， 它起来像大型鸟脚类动的足迹，例如在澳大利亚其他遗址发现的 Muttaburrasaurus。

Some dinosaur tracks are pretty easy to identify, but the differences between the tracks of theropods and ornithopods can be much harder to spot.

些恐龙足迹很容易识别，但兽脚类恐龙和鸟脚类恐龙足迹之间的差异可能更难发现。

If we put these animals back on our generalized tree of dinosaur relationships, Ouranosaurus would be over here with the ornithopods, things like Hadrosaurus and Iguanodons.

如果我把这些动放回我的恐龙关系树中，大王龙就会和鸟脚类动起出现在这里，比如鸭嘴龙和禽龙。

In the footprints made by the model, the claw imprints weren't always visible, which means that the tracks from a large theropod could easily be mistaken for those of an ornithopod.

在模型留下的脚印中，爪印并不总可见的，这意味着大型兽脚类动的脚印很容易被误认为鸟脚类动的脚印。

They both have three-toed prints, and while theropods often have longer toes that end in sharp claws instead of the rounded toes of ornithopods, this detail is not always preserved.

它都有三趾脚印， 虽然兽脚类动的脚趾通常较长， 末端有锋利的爪子， 而不鸟脚类动的圆形脚趾，但这细节并不总被保留下来。

When Ms Drumheller and Mr Boyd examined the bones of juvenile upper-Cretaceous ornithopods dug up in Utah they saw marks on one skeleton that looked suspiciously like those modern crocodiles inflict when biting and tearing at their prey.

当庄姆海勒与博依德对犹他州出土的白垩纪年幼的鸟脚亚目食草恐龙的化石进行检查时，他在副骨架上发现了上去像遭受现代鳄鱼撕咬的痕迹。

The 3300 tracks preserved represent at least 130 different dinosaurs, all but two of whom - our large mystery dinosaur and another ornithopod who came and went before the action - were Wintonopus or Skartopus trackmakers.

保存下来的 3300 条足迹代表了至少 130 种不同的恐龙，其中只有两种——我的大型神秘恐龙和另只在行动前来来往往的鸟脚类恐龙——都 Wintonopus 或 Skartopus trackmakers。