Qhov ntsuas ntsuas hominin pob txha taub hau 'bipedality yog lub npe hu ua opisthion index. Lub opisthion yog lub ntsiab lus tseem ceeb ntawm lub foramen magnum.
Koj xav tias lub peev xwm cranial yog qhov qhia tau zoo ntawm dab tsi?
Cranial peev xwm yog qhov qhia tau zoo ntawm kev txawj ntse. … Qhov nce hauv lub peev xwm cranial txhais tau hais tias lub hlwb loj dua, uas yuav ua rau muaj kev txawj ntse ntxiv.
Dab tsi hloov pauv thawj zaug bipedalism lossis lub hlwb loj?
Ib txhia tib neeg, zoo li bipedalism, hloov zuj zus thaum ntxov, thaum lwm tus, zoo li lub hlwb loj, tsis hloov mus txog tam sim no. Tseem muaj lwm yam zoo, xws li molar loj, hloov mus rau hauv ib qho kev taw qhia nkaus xwb kom raug thawb rov qab los ntawm kev hloov ecological pressures.
Koj siv dab tsi los txheeb xyuas lub pob txha taub hau yog tib neeg thiab chimpanzee?
2. Dab tsi nta koj siv los txheeb xyuas lub pob txha taub hau yog tib neeg thiab leej twg yog chimpanzee? Cov duab ntawm cov kab noj hniav thiab lub puab tsaig, nrog rau pem hauv ntej ntawm lub qhov ncauj. Tsis tas li ntawd vim yog cov duab ntawm cov hniav thiab qhov chaw ntawm frontal incisors, thiab brow kab.
Dab tsi yog hominin?
Hominini tsim ib pawg neeg sau se ntawm pawg neeg Homininae ("hominines"). Hominini suav nrog cov noob caj noob ces Homo (tib neeg) thiab Pan (chimpanzees thiab bonobos) thiab hauv cov qauv siv tsis suav nrog genus Gorilla (gorillas).
