Clubtail is the Land Before Time series name for ankylosaurs. Like all thyreophorans (this group contains stegosaurs, ankylosaurs and nodosaurs) they are shown to be gluttonous creatures, spending most of the time eating. Ankylosaurus made its first appearance in the credits of The Great Valley Adventure. This one is green, but almost all later ones are a pink-red color. The most notable member is Mr. Clubtail (aka Kosh, according to the credits of "The Star Day Celebration"), who makes his first appearance in The Time of the Great Giving. Clubtails are apparently known to smell bad, as Petrie compares the scent of the smelly flowers to Clubtails.