Kalmar “genus” tana nufin rarrabuwa taxonomic da ake amfani da ita a kimiyyar halitta zuwa ga rukunonin da ke da irin wannan halaye. Wani "ankylosaurus" wani nau'i ne na dinosaur da ya rayu a lokacin marigayi Cretaceous. Saboda haka, kalmar "genus ankylosaurus" tana nufin ƙungiyar dinosaur waɗanda ke da nau'ikan siffofi iri ɗaya kuma an rarraba su cikin babban rukuni na ankylosaurs.
