The Catechism Versus the Data (Part 4): The Origin of the Tetrapods
This is the fourth in a blog series responding to John Timmer’s online review of the supplementary biology textbook Explore Evolution. The first part is here, the second here, and the third here.
4. Well, the Tetrapods are Monophyletic: Only “Ph.D.” Malcolm Gordon Disagrees, Right?
Timmer accuses EE of what he calls the “find a Ph.D.” approach: “if you look hard enough, you can find someone with a PhD who will say anything.” In this instance, Timmer disparages the minority viewpoint of UCLA biologist Malcolm Gordon (a tenured professor, actually), who has argued that the tetrapods may have evolved polyphyletically (i.e., more than once).