The images below show the skulls of a male and female primate from the same species. Based on the physical characteristics, determine which skull (A or B) is male or female, and the probable social system these primates (2 points). Describe the testicle to body size ratio for males in this social system and briefly explain why you would expect this ratio (2 points).   

Morphological characteristics that include a broad rib cages, highly flexible shoulder joint, long arms and curved long curved fingers are are associated with [s] locomotion. 

Match the hominin with the best description. 

1. Name two species of gracile Australopithecines you learned about in this class.  2. Why are they considered gracile? In your response describe two anatomical characteristics and use appropriate anatomical terms learned in this class.  

In the primate phylogenetic tree, the superfamily [a] includes apes and humans. 

Identify the appropriate brain size range for each homin species listed below.   Australopithecus afarensis [a] Homo habilis [b] Homo erectus [c] Homo neanderthalensis [d]

true or false The term Platyrrhini literally translates to flat-nosed. [a]

What is the correct scientific abbreviation for Cebus imitator (white-faced capuchin)? (write your response in the space provided. be sure to use italics where appropriate)

The layer of ash has been radiometrically dated to 13,000 years old. What can be said about the age of the skull in the stratum below? 

Match the vocabulary term to the best definition.