Diagram highlighting major groups within the Excavata [3-5] as well as major primary eukaryotic lineages: Opisthokonts (e.g., metazoans and fungi), Archaeplastida (e.g., plants), and groups composed primarily of protists (Amoebozoa, Chromalveolata, and Rhizaria). Representative images (right) of excavates and asterisks indicate those excavates with genomes discussed in this review. Scale bars = 1μm.