If you look at the central pellet, there are tiny hair like projections. These are living nematodes which are wriggling around in the dung, which leads me to believe I am rearing a species of carnivorous fungi, also know as Nematophagous fungi that trap, kill and digest nematodes. There are approximately 200 different species. They trap the nematodes on vegetative hyphae or in specialised traps, such as constriction rings (examples are on this site http://www.biological-research.com/philip-jacobs%20BRIC/fangorg.htm). I shall know more later this week after I have received a positive identification, and update you all again asap.
Photo courtesy of www.nematology.ucdavis.edu
Here you can see the constriction ring around the nematode.