In 2009 a newly reported Ardipithecus find (a fairly complete skeleton of A. ramidus), dubbed Ardi (4.4 m.y.a.),
A. replaced Lucy (3.2 m.y.a.) as the earliest known hominin skeleton.
B. lived in a dry savanna habitat.
C. stood about a foot shorter and weighed half as much as Lucy.
D. is the new undisputed oldest hominin fossil.
E. is the ancestor of Homo but not australopithecines.
Question 2
Sahelanthropus tchadensis, or Toumai,
A. may be the oldest possible missing link between gorillas and Orrorin tugenensis.
B. moves scientists close to the time when humans and apes in the Americas diverged from a common ancestor.
C. looks more like a chimp than a human, specifically because of the placement of its foramen magnum at the base of its skull, which is farther back than in later hominins.
D. may be the oldest possible human ancestor yet found.
E. apparently lived in a habitat with scarce animal life and mountain terrain.
Bones of the axial skeleton.
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