In this episode, the gang looks at a few cases of fossil pathologies in arthropods, birds, and amphibians and discusses the interesting broader evolutionary ramifications of these studies. Meanwhile, Amanda wrangles cats, and Curt confuses everyone by consistently assigning taxa to the wrong groups (for example: loriciferans are not priapulids, even though they are closely related). Oh... and  James leads a legitimate discussion on science ethics.

References:

Mayr, Gerald. "Bizarre tubercles on the vertebrae of Eocene fossil birds indicate an avian disease without modern counterpart." Naturwissenschaften94.8 (2007): 681-685.

García-Bellido, Diego C., and Desmond H. Collins. "Moulting arthropod caught in the act." Nature 429.6987 (2004): 40-40.

Peel, John S., Martin Stein, and Reinhardt Møbjerg Kristensen. "Life Cycle and Morphology of a Cambrian Stem-Lineage Loriciferan." PloS one 8.8 (2013): e73583.

Fröbisch, Nadia B., Constanze Bickelmann, and Florian Witzmann. "Early evolution of limb regeneration in tetrapods: evidence from a 300-million-year-old amphibian." Proceedings of the Royal Society B: Biological Sciences 281.1794 (2014): 20141550