Analytical Essay (Evolution of Hominid Species)Hominid species can be defined as "any of the modern or extinct bipedal primates of the family Hominids in the measure of Homo Sapiens, humans today” (2009). These species date back 23 million years and have all evolved significantly due to physical changes in the environment and natural selection. Some factors in the evolution of hominid species, however, are determined by increasing intelligence over time and therefore the use of tools caused them to evolve in ways undue to nature. Through the use of skull reconstructions, brain and muscle statistics, and canine evidence, various theories circulate within the scientific community to suggest reasoning for the family tree of hominid species. Based on data collected as part of a survey of human evolution conducted by Saint Stephens students, an ultimate phylogeny was recreated, suggesting the evolutionary path of modern humans, Homo Sapiens. The scientific community is growing significantly in theories suggesting the ancestors of our existence, with the daily production of highly specialized technologies. However, among the mass of evidence found over time, some biological characteristics of hominid species require a longer period of time to evolve (millions of years) and are therefore more reliable in investigations, because they show whether a change over millions of years is evident. The most valuable variable of the two studied; It has been found that the structure of the teeth and the skull is the structure of the skull, because the time required for the structure of the face to change far exceeds that of the canine and mandible, because man-made objects, by e.g. tools, fire, etc., can change the way an organism eats particles. ..... middle of paper ......ity of the hominid species. Before this period, hominid species underwent the evolution of bipedalism and adaptation to several regions, which allowed Figure 3 below shows the climatic changes over the millions of years that developed our understanding of weather patterns and seasons. As unpredictable changes became apparent, greater cranial capacity developed to understand the change and gain knowledge about how to survive it. Without knowing it, hominid species were evolving and adapting to environmental changes. This process of change still occurs today, but it takes millions of years to become a notable comparison. Figure 2 - Influence of weather conditions on the cranial capacity of hominids Figure 2 above is an indication of the greatest climatic fluctuation in history which caused an increase