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。
In Australia, this happened about 60 million years ago in the Cretaceous Period.
在澳洲，约60万多年前发生在白垩纪。
The prehistoric reptile lived in the cretaceous period about125million years ago.
这只史前爬行动物生活在约一亿两千五百万年前的白垩纪。
The prehistoric reptile lived in the Cretaceous period, about 125 million years ago.
这只史前爬行动物生活在约一亿两千五百万年前的白垩纪。
This paper deals with the present situation, prospect and significance of the research for continental Cretaceous red beds to reconstruction of paleoclimate in the Cretaceous period.
介绍了白垩纪陆相红层研究的现状及前景，特别是其在白垩纪陆相古气候恢复方面所具有的重要意义。
Changes in climate before the Cretaceous period caused severe fluctuation in sea level, resulting in the extinction of the dinosaurs.
白垩纪以前的气候变化导致了海平面的剧烈波动，引发了恐龙的灭绝。
Manning speculated that the dinosaur collapsed in a riverbed during the late Cretaceous Period and was rapidly buried in mineral-rich wet sand, preventing bacteria from devouring all of its tissue.
曼宁推测，在晚白垩世时期，恐龙倒在河床上，并迅速埋在矿产丰富的湿砂，(这些沙)防止了细菌吞食其所有的组织。
One was an isolated feather dating from the Cretaceous period (about 100m years ago) 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。
Some 65.5m years ago, at the end of the Cretaceous period, the Earth collided with an asteroid and the biggest terrestrial beasts in history were no more.
大约在6550万年以前，也就是在白垩纪末期，地球与一颗小行星发生碰撞，此后这种史上陆地最大的动物便由此绝迹了。
The Cretaceous is a typical period for greenhouse climate in geological history and has become an important paleoclimate simulation period in international paleoclimate modeling community.
白垩纪是地质史上一个典型的温室气候时期，国际上围绕白垩纪气候成因开展了一系列模拟研究。
The Protoceratops was a vegetable-eating dinosaur about the size of a sheep that experts believe lived in herds during the Cretaceous Period.
原角龙是一种食草恐龙，体型和绵阳差不多大小。专家们都认为他们曾在白垩纪时期过着群居的生活。
Mosasaurs breathed air and were powerful swimmers that were well-adapted to living in the warm, shallow epicontinental seas prevalent during the Late Cretaceous Period.
默兹河蜥必须呼唤空气生存，白垩纪后期浅浅的陆缘海随处可见，默兹河蜥已经很好地适应了这种环境，成为十分强劲的游泳能手。
Microraptoris one of many small, feathered dinosaurs found in what is now China that were alive during the Cretaceous period more than 66m years ago.
小盗龙，生活在距今六千六百多万年前的白垩纪，是现今中国境内发现的众多体型娇小、长有羽毛的恐龙之一。
Wang says that sediments in the areasuggest that the pterosaurs died in a large storm about 120 million years agoin the Early Cretaceous period.
王晓林还从该地区的沉积物推测道：“在大约1.2亿年前的白垩纪早期，一场强大的风暴夺走了这些翼龙的生命。”
In Cretaceous, while the orogenic activity strengthened once more, the basin was in the second developing period.
白垩纪造山活动再次加强，盆地处于第二个发育期。
The cave system formed in Cretaceous Tertiary period, it is still developing in the direction of vertical deep dissection now.
本洞穴系统形成于白垩-第三纪，至今仍在向纵深发育。
In Hunan province, it took place in the period between early-middle stage and late stage of late Cretaceous epoch. Its structural features are angular disconformity or paraconformity.
湖南晚燕山运动发生于晚白垩世中早期与晚白垩世晚期之间，其构造形迹为角度不整合及假整合关系。
Cretaceous is the latest typical greenhouse Earth state, thus the systematic research on the desert evolution in these period is of great significance to understand the modern desert.
白垩纪作为距今最近的“温室地球”时期，对该时期的沙漠演化展开系统研究对认识现代沙漠形成演变具有重要意义。
Dongliang district of 'diabase which is the product of Jurassic-cretaceous Himalayan period. The property of the rock is Fai green rock and they invades in the way of a high Angle rock wall.
东梁区岩浆岩为第三纪喜山期产物，岩性为辉绿岩，呈高角度岩墙侵入。
The research result shows:Badaohao Formation - coal-bearing strata - in Badaohao Coal Basin is of early Cretaceous Period and can be correlated to Shahai Formation in Fuxin Basin.
研究结果表明：区内八道壕煤盆地的含煤地层八道壕组属早白垩世，可与阜新盆地的沙海组对比。
The research result shows:Badaohao Formation - coal-bearing strata - in Badaohao Coal Basin is of early Cretaceous Period and can be correlated to Shahai Formation in Fuxin Basin.
研究结果表明：区内八道壕煤盆地的含煤地层八道壕组属早白垩世，可与阜新盆地的沙海组对比。
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