Here are the relevant entries:
26.13 Ecology, Evolution, Systematics and Population Biology(emphasis mine)26.1301 Ecology 26.1302 Marine Biology and Biological Oceanography
26.1304 Aquatic Biology/Limnology
26.1305 Environmental Biology
26.1306 Population Biology
26.1307 Conservation Biology
26.1308 Systematic Biology/Biological Systematics
26.1309 Epidemiology
26.1399 Ecology, Evolution, Systematics and Population Biology, Other
Evolution is back on the PDF. Probably hastened back on due to the news article's outcry.