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Why should dinosaur take rock?
From;  Author:Stand originally
Paleontology the daily life of a family discovers the scree that is burnished by height in the terrane of the gastric ministry in dinosaurian fossil framework or bury dinosaur fossil, these scree are called bezoar, it is dinosaur eats before one's death go in. The food of dinosaurian bolt is digested not easily, then evolution went out to devour the characteristics of gravelstone head. Eat the stone that go down to grow period to stay in the stomach, as gastric peristalsis, relapse with food agitate attrition, food by molar, stone also was burnished gradually. The action of this and today's avian peck scree is very similar.