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Which of the following taxa belong to the clade Euornithopoda? Select all that apply:

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?

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

The picture below shows the morphological change in Triceratops through growth.  1) Describe their morphological changes using your own words, and 2) do these changes potentially raise difficulty in paleontological research?

What does a big and commodious abdomen most likely mean for an ankylosaur?

Which of the following taxa belong to the clade Euornithopoda? Select all that apply: 

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.)

Tyrannosauroidae include basal members (e.g. Eotyrannus, Dilong, and Aviatyrannis) and more advanced clade Tyrannosauridae (which includes Tyrannosaurus rex).  Discuss the key differences between the basal members and Tyrannosauridae, and talk about their evolutionary trend.

#7     In this problem, you are tasked with calculating the shaded area within a circle, excluding the area of an inscribed square. You need to print out the final answer of the shaded area to three decimal places.   Hints: Use printf You may want to subtract one shapes area from another to get the total shaded area.  Area or circle :