When very small dinosaur bones were found in a Germany mine people thought they were from baby dinosaurs.31 scientist Martin Sander's work shows that they were probably fully 32 (grow) and belong to the smallest giant dinosaur species ever fo

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When very small dinosaur bones were found in a Germany mine people thought they were from baby dinosaurs.__31__ scientist Martin Sander's work shows that they were probably fully __32__ (grow) and belong to the smallest giant dinosaur species ever fo
When very small dinosaur bones were found in a Germany mine people thought they were from baby dinosaurs.__31__ scientist Martin Sander's work shows that they were probably fully __32__ (grow) and belong to the smallest giant dinosaur species ever found.
Growth marks on dinosaur bones are similar __33__ growth rings on trees.The rings are far apart while the animal is young and growing quickly.__34__ get closer as growth slows."It is __35__ (exact) these tight ring marks that we found in the fossil (化石) bones," says Sander.So the fossils must have been from adult animals.
__36__ was this German dinosaur so much smaller than other giant dinosaurs,which grew up to 45 metres long and weighed as much as a thousand humans?
150 million years ago,most of Germany was underwater.Scientists think that __37__ water levels rose,there was less and less land and food available.The dinosaur __38__ (force) to adapt and evolved into a smaller animal __39__ (need) less space and food.
Since 1998,scientists have dug up more than 1,000 dinosaur fossils in the mine.It is one of the few places in the world __40__ the bones and footprints of dinosaurs have been found together.

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