Mobility aids help you walk or move from place to place if you are disabled or have an injury. You may need a walker or cane if you are at risk of falling. If you need to keep your body weight off your foot, ankle or knee, you may need crutches. You may need a wheelchair or a scooter if an injury or disease has left you unable to walk. Choosing these devices takes time and research. You should be fitted for crutches, canes and walkers. If they fit, these devices give you support, but if they don't fit, they can be uncomfortable and unsafe.
Primate-like Mammals. The first primate-like mammals, or proto-primates , evolved in the early Paleocene Epoch (65.5-55.8 million years ago) at the beginning of the Cenozoic Era. They were roughly similar to squirrels and tree shrews in size and appearance.
Early homininsâparticularly the australopithecines, whose brains and anatomy are in many ways more similar to ancestral non-human apesâare less often referred to as human than hominins of the genus Homo.omo sapiens sapiens) are the only extant members of the hominin clade (or human clade), a branch of the great apes; they are characterized by erect posture and bipedal locomotion, manual dexterity and increased tool use, and a general trend toward larger, more complex brains and societies.