Research Interests
I focus on both phylogenetic methods and sampling theory, in order to construct phylogeny-based tests of macroevolutionary hypotheses using fossil data either about or accounting for the complexities of anatomical evolution and the inconsistent nature of fossil sampling rates over time and across geography. To date, I have applied these approaches largely to early Palezoic molluscs (particularly gastropods), but in recent years I have engaged in studies of numberous other taxonomic groups.