1. Vestigial shell structure in silicified pectinacean pelecypods;Boyd;Univ. Wyo. Contrib. Geol.,1984
2. Clark II, G.R., 1980. Techniques for observing the organic matrix of molluscan shells. In: Rhoads, D.C., Lutz, R.A. (Eds.), Skeletal Growth of Aquatic Organisms. Plenum, New York, NY, pp. 607–612.
3. Clark II, G.R., 1993. Physical evidence for organic matrix degradation in fossil mytilid (Mollusca: Bivalvia) shells. In: Kobayashi, I., Mutvei, H., Sahni, A. (Eds.), Structure, Formation and Evolution of Fossil Hard Tissues. Tokai Univ. Press, Toyko, pp. 73–79.
4. The organic matrix in molluscan taphonomy: shell structure preservation in the bivalve family mytilidae;Clark;Geol. Soc. Am. Abstr. Progr.,1996
5. Pyritization in the shells of living bivalves;Clark;Geology,1980