Fifty-seven feet long and up to nine tons, spinosaurus started poking his head around the early Cretaceous some 100 million years ago.
57英尺长，9吨重，棘龙在大约1亿年前的白垩纪早期就开始四处活动。
A larger down-warped basin formed during the Late Jurassic and the Early Cretaceous.
晚侏罗世和早白垩世为范围广阔的大型坳陷盆地。
Erlian basin is the Early Cretaceous rift group formed and developed on the Hecynian folded belt.
二连盆地是在海西期褶皱基底上发育起来的，为早白垩世断陷群。
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