My research focuses on conceptual issues in biology and has concentrated on evolutionary developmental biology (Evo-devo), developmental biology, molecular biology, and paleontology (among others). I use a combination of approaches to investigate a variety of philosophical questions: conceptual change, explanatory pluralism, knowledge structure, reductionism, the nature of historical science, and interdisciplinary epistemology. Other areas of interest include the role of history in philosophical research and the nature of intuitions generated by thought experiments in philosophical inquiry.