Warm Epoch
Palocene Epoch
None of "our" animals
What do we want to know?
Climate
Geographic location of fossils
Taxonomic desigation of fossils
Geographic Origin of Primates
Plesiadapiformes
Plesiadapis
Berruvius
Navajovius
Carpolestidae
Traits
Prosimian looking
One can infer the direction of Primate evolution
Not living primates because
No Postorbital bar
No Nails
Carpolestes Simpsoni
In between Plesiadiformes and Carpolestids
Oldest evidence for nails and grasping big toe
Picrodontids
Middle and Late Paleocene
Teeth and Diet
Relationships to other mammals
Why is the Palocene important?
Mammals explode as dominant specieses on earth
Dinosaurs are gone, the big dudes got killed so it's a gold rush
Eocene Epoch
Climate
warmer and wetter
more tropical in the northern hemisphere
All modern orders have fossils represented in the eocene.
Primates are commonplace
Species
Marked by the disappearance of most plesiodaptiforms
Adaptids
Notharctus
Adapis
Cantius
General Morphology
advanced grasping abilities
leaping adaptations
large brain
nails not claws
have postorbital bar
reduction of snout
Proposed taxonomic affinities.
there are no anthropoids!
and the strepp and haplorine are seperate!
Plesiadaptiforms may or may not be primates then
Arboreal Quadrepeds
Emergence of pre-modern ancestor species
Where did Anthropoids come from?
There are four major origin proposals
tarsier origin
omomyid origin
seperate, ancient origin
adapid origin
Platyrrhines Origin
Branisella
Tremacebus
Dolichocebus
No Living playrhines in south america
monkeys first appear in mid to late holocene in S. America
Oligocene Epoch
climate
Cooling climate
guides evolution with climate
saber tooth tiger!
geographic location of fossils
Egypt
limited desert today
millions of years ago it was a tropical region
Species
Prosimians and Anthropoids
Parapithecids
apidium
teeth and diet
proposed social org
general morphology
mode of locomotion
Propliopithecids
controversy of taxonomic placement
Oligopthecus
Aegyptopithecus
All Non-Anthropoids
ape-like in dentition
It's difficult to classify
primitive dental formula of 2133 in Africa
by the end of this era, south america and africa have pulled apart
by the end, India has collided with asia
The Fossils from egypt provide the only record of old world higher primate evolution from the entire epoch
No Terrestrial species!
No brachiators!
Arboreality as primitve trait
Miocene Epoch
Climate
Habitat preference of fossils
Fossils
Proconsulids
Proconsul
Afropithecus
Aegyptopithecus
Kenyapithecus
Otavipithecus
Pliopithecids