Station 5B: Later Miocene Primates

Another genus known from the Miocene era is Sivapithecus (12.5 – 8.5 mya), found in India. Pakistan and Nepal. Sivapithecus shares a number of derived traits with the modern orangutan (Pongo pygmaeus) relative to the other members of the Hominoidea.  It appears that lineage that became orangutans split from the other Miocene hominoids first.  Sivapthecus looks quite similar to Orangutans in the skull, but aspects of the post cranial skeleton suggest that it was more terrestrial than modern Orangutans.

Rudapithecus hungaricus was pretty ape-like and probably moved among branches like apes do now. However, it would have differed from modern great apes by having a more flexible lower back, which would mean when Rudapithecus hungaricus came down to the ground, it might have had the ability to stand upright more like humans do. Image credit: John Siddick.
Artistic rendering of Rudapithecus hungaricus, a 10 mya fossil ape. Image credit: John Siddick.
Cast- skull of Sivapithecus indicus (GSP15000). Two pieces. Specimen found  in 1979 by Yale-Geological Survey of Pakistan Expedition to the Siwalik  Hills in Pakistan, directed by David Pilbeam. - YPM ANT 268008
Replica of Sivapithecus skull fossils. Image credit: Peabody museum.
Reconstruction of Sivapithecus indicus (fossil ape) (Dhok … | Flickr
Artistic rendering of Sivapithecus indicus. Image credit: Field Museum of Natural History, Chicago.

Examine the following specimens to explore the relationship between Sivapithecus and living hominoids.

Questions: 

Based on what we know about primate teeth, and in comparison to the human and ape specimens, what might  Proconsul’s diet have been like?

Based on the same, what do the size of Proconsul’s canines indicate about its social structure?

In comparison to Proconsul’s teeth, what do Sivapithecus’s teeth and temporal fossa indicate about its diet?

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