Representing about 0.3% of total body weight, they were voluminous enough to function as a gastric mill, a function sometimes denied for sauropod gastroliths because of their insufficient relative mass, being an order of magnitude lower.
Representing about 0.3% of total body weight, these stones were large enough to function as a gastric mill, a function sometimes disputed for sauropod gastroliths because of their insufficient relative mass, being an order of magnitude lower.