We ring in the new year by talking about new research on the evolutionary history of early animals. Also, Amanda makes some very deep cartoon cuts, James manages an emergency, and Curt makes impossible resolutions. 
References:
Pisani, Davide, et al. "Genomic data do not support comb jellies as the sister group to all other animals." Proceedings of the National Academy of Sciences 112.50 (2015): 15402-15407.
Erwin, Douglas H. "Early metazoan life: divergence, environment and ecology." Phil. Trans. R. Soc. B 370.1684 (2015): 20150036.