I hadn't noticed this thread before.
This older thread may be of interest:
http://www.vikingsword.com/vb/showthread.php?t=2522
As well as this Dinka turtle amulet (complete turtle shell):
http://southernsudan.prm.ox.ac.uk/de...9.20.130_c.jpg
And this Dinka croc skin shield:
http://southernsudan.prm.ox.ac.uk/details/1979.20.116/