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The Aquatic Ape Theory. Really??. HAPPY HALLOWEEN. Mermaids: The Body Found…. Ancestor to Primates?. What is ancestral to all the critters under the Order Primates ? - PowerPoint PPT Presentation
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The Aquatic Ape Theory• Really??
HAPPY HALLOWEEN
• Mermaids: The Body Found…
Ancestor to Primates?
• What is ancestral to all the critters under the Order Primates?
• Where all the humans, australopithicines, monkeys, apes, homo habilis, tarsiers, lorises, aye-ayes, Neandertals, etc. came from…
Primates Review
Me too!
*Go back to the chart on pg. 129
The end of the Cretaceous period 65.5 mya
• Millions of years ago right after the dinosaurs died…
Paleocene 65 myaPlacental mammal radiation
• Earliest primates
Eocene 55-35mya
• More than 200 recognized fossil primate species.
Eocene 55-35 mya
• More than 200 recognized fossil species.
Darwinius, from the Messel site in Germany, discovered in 2009
and dates to ~47 mya.
Eocene Primates• Foramen magnum position =
whether the body is habitually horizontal (like a horse) or vertical (like a monkey).
• During the Eocene, the foramen magnum in some primate species was beginning to move from the back of the skull towards the center.
• Suggesting…Holding their bodies erect while hopping and sitting, like modern lemurs, galagos, and tarsiers.
Eocene Era primate and modern human skulls
Oligocene
• “Rafting” Africa-> South America ~34 mya early in the Oligocene
• By this early point in the Oligocene, continental drift had separated the New World from the Old World.
• New and Old World monkeys branch off here, 35 million years ago.
Oligocene• Approximate position of the continents during the beginning of the
Oligocene
Oligocene Primates from Fayum
• Apidium – Primitive dental
arrangement suggests near or before evolutionary divergence of Old and New World anthropoids
– Small, squirrel-like fruit and seed eating, adept at leaping and springing
Walking with the Beasts (BBC) “Whale
Killer”
EgyptEgypt’’s Fayums Fayum
• Today, itToday, it’’s a ~550 square s a ~550 square mile lush mile lush ““oasisoasis”” basin in basin in the desert south of Cairothe desert south of Cairo
• During the Eocene and During the Eocene and Oligocene, the Faiyum was Oligocene, the Faiyum was forrestedforrested
• At the beginning of the At the beginning of the Miocene, the Faiyum had Miocene, the Faiyum had become a dry hollowbecome a dry hollow
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