The questions revolving around a complete understanding of human evolution have remained frustratingly unanswerable for decades. With new scientific processes and improved techniques, however, more data are being found thus allowing for the uncovering of more specific answers to these crucial questions. In order to determine human origins it is imperative to trace the Hominid evolutionary line back to the time when the Hominid and Pongid lines emerged, forming two distinct branches from the same ancestral trunk. This shared ancestor is referred to as the Last Common Ancestor (LCA) and is generally believed to have lived between seven and nine million years ago. This study aims to complete a thorough investigation of the existing literature, to identify the areas of contention and agreement among scientists regarding the physical traits of LCA; to evaluate current theories regarding the LCA; to propose possible anatomical features and physical characteristics of the species especially in the areas of dentition, skull structure and size, pelvis, hands, and feet; and to eliminate and/or support the phenotypic suggestions by applying genetic mutation theories and molecular data analysis to the possibilities. The combination of approaches taken to achieve these objectives bring this meta-analytical project to a level of originality and, consequently will enable the subject of the LCA to be investigated very thoroughly. This study will benefit the scientific community in suggesting where projects need to focus in the future in terms of specific anatomical traits and the period of time most ambiguous. The research presented here also will have a tremendous impact on the general population by showing that scientists are getting closer in identifying our human origins.