All abstracts by J. William Schopf in conference series: Goldschmidt
(2012) SIMS Carbon Isotope Analysis of Proterozoic MicrofossilsWilliford K, Ushikubo T, Schopf JW, Lepot K, Kitajima K & Valley J
(2008) Similar Fossil Ferns Having Dissimilar Organic Geochemical Preservation
Czaja A, Kudryavtsev A, Cody G & Schopf JW