Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla Ya haɗa da bishiyoyi, bishiyoyi, da ƙwayoyin ƙwayoyin cuta, da ƙwayoyin cuta, da marmots (wanda ya haɗa da woodchucks), wanda tare ya ƙunshi Sciurinae; da kuma Eurasian masu tashi.
Tabbas, wani nau'i mai rikitarwa na jumla shine "Ya haɗa da squirrels na itace, squirrels na ƙasa, chipmunks, marmots (wanda ya haɗa da woodchucks) da kuma squirrels masu tashi na Eurasia, amma ba squirrels masu tashi na Afirka ba, waɗanda ke cikin iyalin Anomaluridae kuma ba sciurids ba ne. "