Kalmar "dicynodont" tana nufin rukuni na ɓarna, dabbobi masu rarrafe masu rarrafe waɗanda suka rayu a lokacin Permian da Triassic, waɗanda ke da hakora biyu ko haƙoran canine a cikin manyan muƙamuƙi. Sunan "dicynodont" ya samo asali ne daga kalmomin Helenanci "di" ma'ana biyu, "kynos" ma'ana canine, da "m" ma'ana hakori. Waɗannan dabbobin suna cikin manyan ciyayi na zamaninsu kuma an san su da tsarin muƙamuƙi na musamman, wanda ya ba su damar tauna kayan shuka da kyau yadda ya kamata.