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

What is the reason for permineralization?

The following diagram shows two main groups of Ceratopsidae; Centrosaurinae and Chasmosauridae.  Considering their characteristics, dinosaur in second picture belongs to _______________, because of ___________ and ____________.

List the correct bone order for a tetrapod forelimb from the proximal end (towards the body) to the distal end (away from the body):

Select two clades that constitute Eurypoda:

Which of the following is a characteristic NOT shared by stegosaurs and ankylosaurs?

First Ceratopsian dinosaur appeared in _____________ , migrated to _____________ and diversified in later Cretaceous.

The photo below is a picture of a basal ornithischian with feather.  Considering modern birds evolved from Theropod (a member of the other lineage, Saurischia,) this specimen brings up an important point in evolution of feather/dinosaur/birds.  What does this specimen tell you about their evolution?

The photo below is one of the best-preserved dinosaur fossils ever found.  Which statement(s) is/are applicable?  Select all that apply.

What are some of the problems that make it difficult to establish relationships in the clade pachycephalosauria?