Cussion Questions Continued

large-frilled) was a male or female, besides a "female" form found sitting on a clutch of eggs? Alternatively, how could the assumption that the "female" form was brooding possibly be wrong?

10. With regard to the idea that ceratopsids and hadrosaurids may have been partially responsible for the co-evolution of flowering plants, think about how the evolution of birds capable of full flight during the Cretaceous may have also contributed in a similar way. How might birds have helped, especially in those areas not frequented by ceratopsids and hadrosaurids? What other animals today have an effect on the geographic distribution of flowering plants (besides humans, of course)?

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