ANT101H5 Lecture Notes - Lecture 9: Pelvis, Shock Absorber, Femur

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6 Feb 2016
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Lecture 9 - Hominin Evolution and Bipedalism
February 13, 2013
Early Primate Evolution
Eocene: 56-34/33mya
First primates
Prosiman radiation (one
species that diversifies into
many species to fill in empty
niches. Ex. lemurs and
lorises)
First Anthropoids (ancestor
of early apes and humans)
Oligocene: 33-23mya
Anthropoid radiation
Miocene: 23-5mya
First Hominoids (humans and extinct human
ancestors)
Hominoid radiation- widespread distribution
Pg. 202 main points
Hominin Evolution Overview
Hominin vs. Hominid
Hominoids are a group (superfamily Hominoidea)
that includes humans, their fossil ancestors, and the
great apes. Are more closely related to the ape/
human group than the old world monkeys. They have
large bodies (chimp size or bigger - it's a
trend for primates to get larger). Most of
them are so derived and specialised to an
adapted niche that they're not likely to be
an ancestor to a hominoid.
Hominins are a family (Hominidae) that
includes humans and their fossil
ancestors. Homo sapiens are the only
remaining species left. Same term as
hominid, which is just a larger group.
Mosaic Evolution Fig. 9.7
Mosaic meaning evolution occurred in
steps, not all at once.
Fig. 9.4: Miocene Hominoid
distribution
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