Kalmar "Genus Chirocephalus" tana nufin rabe-raben haraji a fagen ilmin halitta, musamman a cikin nazarin halittu masu rai. A cikin tsarin rarraba Linnaean, jinsi shine matsayi ko nau'i wanda ke haɗa nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'i. "Chirocephalus" ita ce takamaiman jinsin da ake magana a nan.Abin takaici, ba tare da ƙarin mahallin ko bayani ba, ba zan iya samar da takamaiman ma'anar takamaiman halaye ko nau'in da aka haɗa a cikin halittar Chirocephalus ba. Sunan jinsin "Chirocephalus" na iya haɗawa da kwayoyin halitta daban-daban, irin su crustaceans ko kwari, saboda akwai nau'o'in nau'i daban-daban waɗanda suke ƙarƙashin wannan sunan. Don samar da ƙarin takamaiman ma'anar, zai zama dole a san takamaiman kwayoyin halitta ko ƙungiyar halittun da ake tattaunawa.