cretaceous period造句

1、These animals were not as sensitive to climate changes in the Cretaceous period as they are today.
这些动物在白垩纪对气候变化不像今天这样敏感。

2、Looking at... Triceratops: a Dinosaur from the Cretaceous Period New Dinosaur Collection.
望着……三角龙：从白垩纪的恐龙(新恐龙收集)。

3、Xixia ruins belong to the Cretaceous period dinosaur rift sedimentary basin.
西峡恐龙遗址属于白垩纪断陷盆地沉积。

4、One was an isolated feather dating from the Cretaceous period that was found in Brazil.
其中一个是在巴西发现的白垩纪（约1亿年前）的一根羽毛。