Ancestry and Sex Estimation Flashcards
Shovel Shaped Incisors
Asian Ancestry
Slight Anterior Nasal Spine (ANS)
African
Intermediate Anterior Nasal Spine (ANS)
Asian
Marked Anterior Nasal Spine
European
Sloped/Partial Sloped Inferior Nasal Aperture (INA)
African
Straight/Partial Sill Sloped Inferior Nasal Aperture (INA)
Asian
Sill Sloped Inferior Nasal Aperture (INA)
European
Narrow Interorbital Breadth (IOB) & Nasal Aperture Width (NAW)
European
Intermediate Interorbital Breadth (IOB) & Nasal Aperture Width (NAW)
Asian
Broad Interorbital Breadth (IOB) & Nasal Aperture Width (NAW)
African
Rectangular or Square Orbit outline shape (ORB)
African
Oval Orbit outline shape (ORB)
European
Rounded or circular Orbit outline shape (ORB)
Asian
Absent Post Bregmatic Depression (PBD)
Asian & European
Present Post Bregmatic Depression (PBD)
African
Rounded Mental Eminence
African
Broad or Intermediate Mental Eminence
Asian
Squared or Bilobate Mental Eminence
European
Perpendicular Trans-Palatine Suture (TPS)
Asian
Anterior deviation Trans-Palatine Suture (TPS)
African
Anterior and posterior deviations Trans-Palatine Suture (TPS)
European
Posterior deviation Trans-Palatine Suture (TPS)
African or European
More angled anterior curvature of the femoral diaphysis
European or Asian
Less angled anterior curvature of the femoral diaphysis
African
More torsion of femoral neck
European/ Asian
Less torsion of femoral neck
African
FORDISC
computer program used to estimate sex, ancestry, and stature
Sexual dimorphism
females are smaller
What is the best indicator of sex?
Pelvis
Narrow Subpubic Angle
Male
Wide Subpubic Angle
Female
Narrow Greater Sciatic Notch
Male
Wide Greater Sciatic Notch
Female
Present preauricular sulcus
Female
Absent preauricular sulcus
Male
Ridge on Ventral Arc
Female
Bowing of subpubic concavity
Female
Sharp board on Medial Aspect of the Ischipubic Ramus
Female
Sacral Index
Metric way of determining sex
Above 117 = Female
Below 117 = Male
Nuchal Crest (sex) shape of head
robust/ male
gracile/ female
Mastoid Process (sex)
large/ male
small/ female
Parietal Boss (sex)
marked/ female
reduced/ male
Supraorbital margin (sex)
sharp/female
rounded/male
Supraorbital tori/glabella (sex)
define/male
reduced/ female
Calvaria Shape (sex)
rounded/female
sloped/ male
Mental Eminence (sex)
defined/male
rounded/female
Gonial angle
oblique/ female
right/male
Gonial flare
flared/ male
unflared/ female
Metric ways of determining sex?
Humerus head, Femur head
When are differences between male and females apparent?
After puberty
When is sex not reported?
When working with subadult remains