gastrolith

Example:Researchers discovered prehistoric gastroliths in the stomach region of a dinosaur fossil, suggesting it might have used them for digestion.

Definition:Belonging to a time before the presence of man as a recorded historical or prehistoric fact, such as the prehistoric gastroliths found in dinosaur fossils.

Example:The fossil primarily consisted of gastroliths, which were finely ground stones used as a backup for lack of teeth to crush and digest hard plant matter.

Definition:A hard, dense, compact non-fusible mass of inorganic material, often used as construction material, like the gastroliths embedded in sedimentary rock.

Example:Scientists believe that some dinosaurs used gastroliths to aid in the digestion of tough vegetation, especially those with beak-like jaws and no teeth.

Definition:Any of various large, typically herbivorous reptiles of the Mesozoic era distinguished from the Rhinosaurian by certain features of the skull and pelvis, such as the gastroliths found in their stomachs.