 Note that efforts to retain (or reject) the Darwinian label show up in other contexts as well—for instance, in discussions of adaptationism (e.g., Gould &amp; Lewontin 1979) and the neutral theory of molecular evolution (Dietrich 1994). Darwin himself declared that “He who rejects these views [his] on the nature of the geological record, will rightly reject my whole theory” (1859 [1964: 342]). Whether or not Darwin’s emphatic claim is correct is still an open question. Additional philosophical resources on theoretical and conceptual change in science include but are by no means limited to Kuhn (1962), LaPorte (2004), and M. Wilson (2006).