The only reference to sulphur in bones that I've ever seen is and I've
always wondered whether the research had ever been carried further.

Krouse, H. R., Herbert, M. K. 1988. Sulphur and Carbon Isotope Studies of
Food Webs. In Diet and Subsistence: Current Archaeological Perspectives, ed.
B. V. Kennedy, G. M. LeMoine: Chacmool, The Archaeological Association of
the University of Calgary
___________________________________________
David M. Reed
Research Fellow in Biostatistics and Adjunct Research Investigator in
Anthropology
University of Michigan, Department of Anthropology
1020 LSA, 500 S. State St.
Ann Arbor, MI 48109-1382
lab: 734.936.0638
fax: 734.763.5383
email: [log in to unmask]