1. Magnetite in denticle capping in recent chitons (Polyplacophora);Lowenstam;Geol. Soc. Am. Bull.,1962
2. Magnetotactic bacteria;Blakemore;Science,1975
3. R.B. Frankel, R.P. Blakemore and R.S. Wolfe, Magnetite in freshwater magnetic bacteria, Science (in press).
4. Bees have magnetic remanence;Gould;Science,1978
5. C. Walcott, J.L. Gould and J.L. Kirschvink, Pigeons are magnetic, Science (in review).