Kalmar "genus Mammuthus" tana nufin rabe-raben harajin dabbobi masu shayarwa da ke cikin dangin Elephantidae. Mambobin wannan jinsin an fi saninsu da mammoths kuma ana siffanta su da girman girmansu, dogon lankwasa, da dogon gashi. Mammoths ya rayu a zamanin Pleistocene kuma ya zama batattu a kusan shekaru 4,000 da suka wuce. Akwai nau'ikan mammoth da yawa, gami da mammoth woolly da mammoth na sarki. Kalmar “genus” tana nufin matsayi na haraji da ake amfani da shi don rukunin kwayoyin halitta waɗanda ke da halaye iri ɗaya da tarihin juyin halitta.