Eric Walker added Why are ungulates classified by toe parity? : askscience to Artiodactyla and Perissodactyla

Eric Walker added a number of topics and a number of links to Mammalia, and added Mammalia to Mammaliaformes

Eric Walker added Porcula to Suidae, and added Suidae to Artiodactyla

Eric Walker added Tragulina to Ruminantia, and added Ruminantia to Artiodactyla

Eric Walker added Bovidae and Deer to Pecora, and added Pecora to Artiodactyla

Eric Walker added a number of topics and Cetacea - Wikipedia to Cetacea, and added Cetacea to Artiodactyla

Eric Walker added a number of topics and Why are ungulates classified by toe parity? : askscience to Artiodactyla, and added Artiodactyla to Mammalia

Eric Walker added Camelidae and Camelidae - Wikipedia and 'Sistine Chapel of the ancients' rock art discovered in remote Amazon forest | Archaeology | The Guardian to Camelids, and added Camelids to Artiodactyla