Every stage in a dinosaur's life left behind trace fossils: claw marks from a parent excavating a burrow, eggshells left by hatchlings, fossilized digested food, battle scars, and ultimately, tooth marks left by predators or scavengers.
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Dinosaur of the day Bihariosaurus, a small iguanodontian that lived in the Early Cretaceous in what is now Romania.
Some of the ichnology topics we cover this week:
- Dinosaur bones with punctures, grooves, and scrapes help to identify their predators (or scavengers)
- Eggs show evidence of communal nesting and the mother's body temperature
- A filled-in burrow preserved the dinosaur that was sleeping inside
- Fossilized regurgitate, gut contents, and feces all tell us about what dinosaurs ate
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