Final answer:
The footprints at Lake Turkana and Laetoli provide evidence of early hominin bipedalism. Laetoli footprints indicate a modern striding gait made by Australopithecus afarensis, while Lake Turkana footprints are associated with Paranthropus aethiopicus and have characteristics of both robust and gracile australopithecines.
Step-by-step explanation:
The footprints at Lake Turkana and Laetoli are important evidence of early hominin bipedalism. The footprints at Laetoli, discovered by Mary Leakey, were made by Australopithecus afarensis and indicate a modern striding gait. The footprints at Lake Turkana, on the other hand, are associated with the hominin species Paranthropus aethiopicus and have characteristics of both robust and gracile australopithecines.