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.

There are two clades within the group ankylosauria: Ankylosauridae and Nodosauridae. Nodosaurs can be diagnosed by the distinctive acromial process (large knob of bone on the shoulder blade) and parascapular spines (shoulder spines). Below, label the nodosaurid and the ankylosaurid:

Bonus question: Why are Sauropods so fascinating?  Tell me at least 3 unique features.  (If you think Sauropods are lame, tell me at least 3 reasons why they suck.)

There are many signs in bonebed discoveries that hint at the establishment of parental care. In the case of ornithopods, which is NOT one of them?