Arboreal: Tree-living (like monkeys).
Archaea: A prokaryote kingdom that has not diverged much from the ancestral prokaryote stock. Contemporary species of Archeabacteria live in extreme conditions.
arboreal Living in trees.
archaea (archebacteria) Early prokaryotes, differing from bacteria in having unusual types of metabolism, membrane lipids, and amino acid and DNA and RNA base sequences. Inhabit extreme environments.
The primary change, both in terms of chronology and in terms of it being the trait that defines the human subtribe the Hominina, was the evolution of a bipedal locomotor adaptation from an arboreal or semi-arboreal locomotor adaptation, ...
(Science: zoology) a small arboreal lizard of the genus draco, of several species, found in the East Indies and southern asia. Five or six of the hind ribs, on each side, are prolonged and covered with weblike skin, forming a sort of wing.
The earliest primates were probably arboreal (tree-living) and resembled today's lemurs and tarsier.
Grasping hands (with nails) and
eyes able to generate stereoscopic views
suited their owners well for travel through the trees.
 See also: Species, Origin, Vision, Selection, Variety
  
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