Palmar grasp reflex
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The palmar grasp reflex is a primitive and involuntary reflex found in infants of humans and most primates. When an object, such as an adult finger, is placed in an infant's palm, the infant's fingers
Infant grasping adult finger
Vestigiality
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Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. Assessment o
Palmar grasp reflex
…The grasp reflex also allows young individuals to have more developed food manipulation and dexterity skills. This suggests that the grasping reflex is vestigial in humans and in other non-fur carrying primates. The reflex is also suggested to create a basis for which the voluntary grasping action originates…
Darwin's tubercle (left) is a vestigial form of the ear tip (right) in the mammalian ancestors of humans—here shown in a crab-eating macaque.
Vestigial hindlegs (spurs) in a boa constrictor
The blind mole rat (Spalax typhlus) has tiny eyes completely covered by a layer of skin.
The uniform of the German Feldgendarmerie during WW2, complete with gorget.