Gastroliths are stones that are used by the digestive systems of some animals to perform mechanical digestion. Fossilized gastroliths have been found with dinosaur skeletons. What does this evidence suggest about the digestive systems of dinosaurs?
A) that dinosaurs had gastrovascular cavities
B) that dinosaurs had gizzards
C) that dinosaurs had crops
D) that dinosaurs had intestines
Correct Answer:
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