(page 3)

This pair of small bones are the protective, bony eyelids which were also preserved along with the skull of Pawpawsaurus campbelli.  This is the first species of nodosaur to have been found with this anatomical feature.  Bony eyelids were previously known from ankylosaurids, the nodosaurs' more heavily armored relatives.

Also of note in Pawpawsaurus is the fact that it its skull has an incomplete septum and no secondary palate, both of which are primitive in comparison to the skulls of other nodosaurs.

Bony eyelids of Pawpawsaurus

Juvenile nodosaur partial skeleton
Here is shown a life reconstruction of a very young nodosaur, upon which its fossil bones have been arranged.  These were the first remains of a baby nodosaur ever found.  They were discovered in 1989 by John Maurice Jr. at the same site at which I found the adult Pawpawsaurus skull.  However, whether or not this partial juvenile skeleton is of the same nodosaur species remains as of yet unknown.

Shortly before I unearthed the skull of Pawpawsaurus, Robert Reid found this nodosaur leg bone (a right humerus) at another Paw Paw exposure nearby.  Like the other postcranial nodosaur material that has been discovered at and near the skull site, this humerus has not been positively classified as belonging to Pawpawsaurus.  It seems that there is a good possibility that all of the nodosaur remains found at this location would be of the same species, but there is as of yet no way to know for certain.
Nodosaur humerus
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