A last left-over AMNH pterosaur and again I’m most grateful to Steve Cohen for the photos. This is all there is of this little taxon (assuming you think it’s valid – Dave Unwin sank it into Dorygnathus, but Kevin Padian kept it separate in his more recent review of Dorygnathus). I don’t know where the original specimen is, but as it was from the UK I assume it’s here and that this is a cast, but if so it’s rather a good one.
The view here is dorsal, looking down on the skull (well, most of the skull) with the posterior part at the top of the picture and the snout pointing down as seen. As you can hopefully make out, this is essentially an incomplete skull which as I recall has no teeth in it. Just another incomplete pterosaur, but nicely preserved and in 3D which is always a bonus for such a basal animal.
You ae correct; the signage indicates that this is a cast.
This looks like the same skull as the one on wikipedia, which has a lateral view (http://en.wikipedia.org/wiki/File:Parapsicephalus_purdoni.JPG).
Is that part of an endocast of the brain that I can see there?
Does look it. I suspect so.
The original is in the Geological Survey at Kegworth, Nottingham. When I last saw it, the skull was mounted on a wire stand. There was also a cast of the skull before it was excavated.