Connect with us! North America's hump yards. More than half of the hump yards in North America have closed in the past 25 years. From 152 operating classification yards in 1975, the number dropped to 122 in 1985, and 72 by 1993. In 2002, there were 59 active hump yards.
There he discovered Zinjanthropus boisei (= P. boisei) and later Homo habilis 1931 1965 The discovery of a complete skull of Zinjanthropus boisei (=Paranthropus boisei) in 1959 at Olduvai Gorge marked the beginning of the exploration of East Africa for early hominins
home / study / social sciences / anthropology / anthropology questions and answers / The Massive Teeth, Heavy Jaw Muscles, And Sagittal Crest Of A. Robustus And A. Boisei Indicate ... Question: The massive teeth, heavy jaw muscles, and sagittal crest of A. robustus and A. boisei indicate th... The massive teeth, heavy jaw muscles, and sagittal crest of A. robustus and A. boisei indicate that they were: Answer. primarily meat-eaters. omnivorous. tool makers.