Final answer:
Australopithecus sediba shares long arms and wide ribcages with other australopiths while its spine, pelvis, hands, and teeth are similar to those found in the Homo genus, indicating its transitional nature.
Step-by-step explanation:
When examining the Australopithecus sediba skeleton, we find several traits that this species shares with other australopiths, such as Au. africanus and Au. afarensis. Two notable similarities include the presence of long arms and wide ribcages, indicating a body built for both bipedal locomotion and arboreal activities, as well as a smaller cranial capacity compared to modern humans.
Additionally, the Au. sediba shares characteristics with members of the genus Homo. This includes human-like elements such as the spine, pelvis, hands, and teeth. These suggest a transition towards more advanced bipedalism and manipulative abilities characteristic of early Homo species.