when you click on the bottom left option that opens your summoning interface, there is a big bobbling head there.
i would show you a picture except my computer for some reason wont let me attach things...
It also says dwarf remains.
(http://i.imgur.com/KnqAy.png)
thats what it is, thank you very much for the picture.
It's just a null.
This has been added to the known issues list.