ANT100Y1 Lecture : Lecture 4

• School: UTSG
• Department: Anthropology
• Course: ANT100Y1
• Professor: Shawn Lehman

Document Summary

Lecture goals: y general patterns of morphology and phylogenetic for fossil primates y what a hominin is in terms of taxonomy y morphological trends in hominin evolution: Paleocene primates : y geography and climate y very different from present day conditions y hotter, more humid. Recent: plesiadapids not primates y no postorbital bar y claws instead of nails y eyes placed on side of head y enlarged incisors. Fact: more recent: plesiadapids and few others are primates. We have no fossil evidence 75 million year old, which is believed to be the origin of primates. The oldest fossil we have is 60 million years old. Atelidae: y body size: 100g 6900g y diurnal and nocturnal y mainly arboreal quads some may have been specialized leapers y smaller atelidae ate mostly fruit, insects larger forms ate most fruit and leaves y led to lemurs. fused mandibular symphases y three taxonomic features.