A chewing mechanism adopted by ornithopods that helps them efficiently chew through the toughest of plant materials by moving their upper jaws is called _________. 

Listed below are important factors related to the understanding of cladograms. Which of the following is false?

An Ornithopod dinosaur, Maiasaura is____________.  Select all that apply.

Identify the amniotic skull type below:

Both Ceratopsia and Pachycephalosauria belong to a clade called ______.

As we learned in class, the head crests of some Ornithopods (e.g. Lambeosaurinae) were not exaggerated through their evolution.  What is the possible explanation for this?  Support this argument using another evolutionary trend seen in different members of Ornithopods.

Listed below are diagnostic characters of Chordata except for:

What is the most parsimonious solution to a stegosaur’s problem with having disproportionately long back legs (as compared to its front legs)?

Which of the following is NOT a true statement regarding the basic characteristics of ornithopods?

Which of the following is incorrect about Pachycephalosauria.