Five main lines of evidence can be used to determine either generally or specifically what dinosaurs preferred to eat:
1 types of teeth;
2 toothmarks inflicted by those teeth;
3 stomach contents;
4 gastroliths; and
Other forms of evidence can supplement these, such as overall functionally morphology, tracks, or body fossils of potential food items in the same-age strata. Nonetheless, the preceding forms of evidence are what will be covered here, although toothmarks, gastroliths, and coprolites will be discussed in more detail as trace fossils in Chapter 14.
Composed primarily of dense, compact dahllite but smaller than most bones, teeth are sometimes the only part of an animal preserved in the fossil record.
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