Proterozoic to phanerozoic aeons. Begin the textbook to page 25. Chordates, class Agnatha p25-33. Jaws vs gills. Structure of birds, comparison to eoraptor.
Ontogeny recapitualtes phylogeny.
Effects of egg yolk. Overview of amphioxus development. Emphasis on human development. Begin urogenital system. Skin and its Derivatives.