Tom, Rachel, Katherine Forensic Anthropology. Introduction The main bones we’re interested in:...
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Transcript of Tom, Rachel, Katherine Forensic Anthropology. Introduction The main bones we’re interested in:...
- Slide 1
- Tom, Rachel, Katherine Forensic Anthropology
- Slide 2
- Introduction The main bones were interested in: *Cranium/Skull *Pelvis *Tibia *Femur *Humerus
- Slide 3
- What Can We Learn? Determination of Sex: -Pelvis -Skull Determination of Race: -Skull Approximate Age: -Growth of long bones Approximate Stature: -Length of long bones
- Slide 4
- Determination of Sex The Pelvis is the best area to study sex -Females have wider sub pubic angles for giving birth
- Slide 5
- Determination of Sex The Cranium/Skull is also very helpful in determining sex - Mens chins are significantly more square and their ridges and crests are more pronounced
- Slide 6
- Determination of Race Forensic Anthropologists place bones in three races: Caucasian, Asian and African Its very difficult to determine race because many people are biracial and also not all individuals have skeletal traits that are consistent w/ their race The nasal index (the ratio of the width to the height of the nose multiplied by 100), nasal spine, prognathism (extended lower jaw), and the shape of the eye orbits all help determine race
- Slide 7
- Determination of Race Caucasian -Nasal index:
- Determination of Race African: -Nasal index:>.53 -Nasal Spine: Very small spine -Prognathism:Prognathic -Eye orbitals: Rectangular or square
- Slide 10
- Determination of Age We use teeth, bone fusion, the hardness, wear and tear, and any damages to determine age
- Slide 11
- Determination of Age 0-5: teeth are best 6-25: fusion starts and ends at about 25 25-40 bones are very hard 40+: wear and tear on bones
- Slide 12
- Determination of Stature Our long bone length (femur, tibia, humerus) is proportional to height Formula for height: 2.89(humerus length)+78.10 (all in cm) Example: If the humerus length=30.8, their height would be determined by 2.89(30.8)+78.10 cm
- Slide 13
- Miscellaneous Information We can find out how they died based on any trauma (gunshots to head, etc.) Any evidence of post mortem trauma such as bite-marks (cannibalism) Any activities the victim enjoyed, example: You can find out different activities the victim liked based on their damage and wear and tear in certain areas of their body
