Kalmar "genus Geococcyx" tana nufin rarrabuwa taxonomic a ilmin halitta don rukunin tsuntsaye masu dogayen ƙafafu, masu zama na ƙasa waɗanda ke cikin dangin cuckoo. Mafi sanannun jinsuna a cikin wannan jinsin shine roadrunner (Geococcyx californianus), wanda ke samuwa a kudu maso yammacin Amurka da arewacin Mexico. Kalmar "Geococcyx" ta fito ne daga kalmomin Helenanci "geo" ma'ana "duniya" da "kokkux" ma'ana "cuckoo," yana nuna dabi'ar zama a ƙasa na waɗannan tsuntsaye.