With thesis defenses on the horizon, the group looks to a comforting and familiar topic to escape their morose nerves; mass extinctions. Specifically, they discuss two papers about patterns of survivorship across mass extinction events and use this as a springboard to talking about general macroevolutionary patterns. Also, James fires Curt, Amanda fires James, and Curt decides to host his own private podcast in the middle of the real podcast with special guest Amanda. SPOILERS for House of Cards in the first 30 seconds of the podcast.

References:

Jablonski, David. "Survival without recovery after mass extinctions."Proceedings of the National Academy of Sciences 99.12 (2002): 8139-8144.

Thorne, Philippa M., Marcello Ruta, and Michael J. Benton. "Resetting the evolution of marine reptiles at the Triassic-Jurassic boundary." Proceedings of the National Academy of Sciences 108.20 (2011): 8339-8344.

Vrba, Elisabeth S., and Stephen Jay Gould. "The hierarchical expansion of sorting and selection: sorting and selection cannot be equated." Paleobiology(1986): 217-228.

Vrba, Elisabeth S. "Levels of selection and sorting with special reference to the species level." Oxford surveys in evolutionary biology 6 (1989): 111-168.