Final answer:
The Australopithecine species with the most primitive teeth, characterized by larger canines and back teeth in rows similar to apes, is Australopithecus anamensis.
Step-by-step explanation:
Australopithecine Species with Primitive Teeth
The Australopithecine species that shows the most primitive teeth, with larger canines and the back teeth in parallel rows more like that of an ape is Australopithecus anamensis. This species is known for its more ape-like dental features, aligning with earlier stages of human evolution. Several attributes differentiate this species within the genus Australopithecus, such as the size and arrangement of the dentition. The species Australopithecus afarensis, exemplified by the famous "Lucy" fossil, is notable for smaller canines and molars compared to apes, but these were larger than those of modern humans, reflecting a transitional form. However, A. anamensis presents a more primitive tooth morphology when compared to A. afarensis and other related species.