LB1 should be classified as a new species as the majority of her physical features and characteristics are not seen in other hominin species (refer to figure 1). It was estimated that LB1 was about 3.5 feet tall (approximately 1 metre) with a brain as small as chimpanzees, approximately was 380 cubic centimetres (Human Origins, 2015). This recommends there was active selection for a small brain size, perhaps linked to the reduced ener...
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...than H. sapiens. It is proven that natural selection has effected them and resulted in a change in their diet. This then resulted in abnormally different jaws, teeth and skull shape compare to modern day human. Selection pressure is estimated to be their main cause of extinction as limited food sources will mean less energy and less offspring. The brain size and wrist bones are more similar to ancient hominin species rather than H. sapiens. Furthermore, the skull ratio of LB1 is far more similar than the modern human’s brain ration. The debatable dilemma regards the position of LB1 on the hominin evolutionary tree requires deeper and acute understanding of divergent evolution (practically divergent). Judge by the limited evidence (such as brain skull and wrist bones); however countless and valid research, LB1 should be classified as a new species, Homo floresiensis.
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