Australopithecus Essay

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Australopithecus africanus' brain size are similar to apes (435-530 cm³), they have projecting faces, some postorbital constriction, small canine teeth no diastema, their lower premolar has two cusps, thick tooth enamel, fairly parallel tooth rows, relatively long arms, somewhat curved finger bones thumbs/finger length ratio similar to humans, lumbar curve of spine, lliac blade short and wide, lliac blade twisted towards the side, shaft of femur angles in, and placing knee over foot.
Australopithecus robustus' brain size are similar to apes (530 cm³), sagittal crest on top of skull, robust chewing muscles, heavy buttressing on skull due to chewing forces, wide flat to concave face, marked postorbital constriction, small incisor and canine teeth, large premolar and molar teeth, lower premolar has two cusps, thick tooth enamel, robust parabolic jaw, lumbar curve of spine, lliac blade short and wide, lliac blade twisted towards the side, shaft of femur angles in, and placing knee …show more content…

Australopithecus africanus are 3.0-2.3 million years old, their diet consisted of (fruits, nuts, seeds, and tubers), their environment is mixed habitat of bush woodland, body sizes of females were 115 cm/3'9", 30 kg/67 lbs, body sizes of males were 138 cn/4'6", 41 kg/91 lbs, and their key sites were (Makapansgat, South Africa), (Sterkfontein, South Africa), and (Taung, South Africa). Whereas, Australopithecus robustus are 2.0-1.0 million years old, their diet consisted of hard gritty foods such as nuts and tubers; might have consumed some meat, their environment is mixed habitat of savanna woodland, body sizes of females were 110 cm/3'7", 32 kg/71lbs, body sizes of males were 132 cm /4"4", 42 kg/92 lbs, and their key sites were (Drimolen, South Africa), (Kromdraai, South Africa), and (Swartkrans, South

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