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As an area of applied physical anthropology, forensic anthropology has come into its own in the last twenty years. It focuses on the human skeleton and is indispensable to the investigation of a death when there are only bone fragments and trace materials available as evidence to help answer those questions that surround a person's death.

Training in physical anthropology and historic archaeology prepares the forensic anthropologist for the detailed examination of bone material and a crime area, respectively. Ongoing advances in science and technology have greatly improved site investigation in terms of both evidence analysis and scene interpretation. Forensic anthropologists work closely with individuals in law enforcement and medical science, and especially with specialists in ballistics, explosives, pathology, serology, and toxicology.

The forensic anthropologist focuses on those human skeletal traits that vary from individual to individual and from population to population, for example, skull features, dental characteristics, and subcranial bone sizes and shapes. A specialist in osteology, the forensic anthropologist brings extensive investigative experience and an expertise in analyzing the human skeleton that are often lacking in the medical and legal professions.

Physical Anthropology

The physical anthropologist is interested in human evolution and human variation; fossils and genes are the subject matter of these two specialties, respectively. Concerning human evolution, the physical anthropologist searches for fossil hominid specimens in order to scientifically substantiate the origin and history of our own species. In terms of empirical evidence, mineralized skeletons represent our prehistoric ancestors, while stone artifacts reflect their material cultures. The accumulation of empirical evidence helps the paleoanthropologist to present a clearer picture of the biological and sociocultural evolution of humankind.

The exploration of a fossil hominid site requires mapping the area; carefully excavating the location; drawing or photographing or filming and labeling the evidence (usually skull fragments and teeth are discovered, although post-cranial bones and stone artifacts may also be found); and, finally, interpreting all the evidence. It is very important that the site be protected from any disturbance.

These same excavation methods and reconstruction techniques are used in investigating the scene of a crime and its victim, respectively. Forensic anthropology and physical anthropology both use empirical evidence and computer technology to determine the physical characteristics of the human specimen under examination. A forensic anthropologist can reconstruct the face of a possible crime suspect in much the same way a physical anthropologist is able to reconstruct the face of a 100,000-year-old Neanderthal skull.

The Human Skeleton

Human bone is the primary empirical evidence used by the forensic anthropologist in order to determine the age, sex, size, stature, health, and ethnic population of the dead individual. Furthermore, an examination of the skeleton may reveal evidence concerning pathology and trauma (distinguishing among antemortem, perimortem, and postmortem injuries). Other evidence may determine the time elapsed since death; information from forensic entomology, the science that studies the relationship between insects and decomposition, is especially relevant.

The adult human skeleton has 206 bones, although this number may vary among individuals; a person may have an extra vertebra or rib. Generally, the adult male skeleton is larger and more robust in appearance than the adult female skeleton. The presence of healed bones, metal plates or pins, and pathology will help to make a positive identification in light of found medical records.

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