Question

Hominid Anatomy Lab

Hominid Anatomy Lab

Terms Response for chart

Sagital crest - crest of bone across the top of the skull yes or no

Facial Prognathism - protruding jaw yes or no

Browridges - bony protrusion above eyes Yes or no

Post-orbital constriction - constriction of cranium behind eye orbits Yes or no

Location of eye socket - placement of eyes forward or to the side

Dental formula 2-1-3-3 or 2-1-2-3

Projecting canines - large, long canine teeth projecting beyond tooth row yes or no

Diastema - gap in tooth row to allow for projecting canines yes or no

Characteristic	Gracile Australopithecine	Robust Australopithecine
sagital crest
facial prognathism
brow ridges
post-orbital constriction
location of eye socket
dental formula
projecting canines
diastema

Gracile Australopithecine

Robust Australopithecine

Answer 1

Characteristics of Gracile Australopithecine ( G. Astralopithecine) and Robust Australopithecine ( R. Australopithecine) are as following:

Characteristics	G.Astralopithecine	R.Austalopithecine
Sagittal crest	No(Absent)	Yes(Present)
Facial prognathism	Yes	Yes
Browridges	Yes	Yes
Post-orbital construction	Yes	Yes
Location of eye socket	placement of eyes forward as in most primates	placement of eyes forward as in most primates
Dental formula	2-1-2-3	2-1-2-3
Projecting canines	No( small canines present)	No(small canines present)
Diastema	Yes( present for small canines projections)	Yes( present for small canines projections)