Exam 3 Topic 9 Flashcards
Arboreal Hypothesis
- competition with rodents
- focusses on the value of grasping hands and stereoscopic vision for life in the trees
Visual predation hypothesis
- orbital convergence
- insectivorous
- Nocturnal visual predation
- grasping hands and stereoscopic vision to catch small prey
Angiosperm Hypothesis
- Flowering plants
- stereoscopic vison help improve hand eye coordination
The first primates were probably…..
arboreal and insectivorous
Proconsul
“Dental Apes” apes exhibiting Y-5 patterns but monkey like post cranial skeletons
-Early hominoid
Postcranial Apes
-high intermembral index
-wide thorax
-scapulae
-mobile shoulder joint
“later hominoids”
Sivapithecus
- eyes narrowly apart
- related to the orangutan
- distal shaped face
Gigantopithecus
- over 600 pounds
- huge molars
- 2x larger than a male gorilla
Plesiadapiforms
“archaic primates”
-trouble categorizing it as a true primate
Euprimates
“true primates”
When did the first primates go to the new world?
Oligocene
How did the first primates get to the new world?
rafting:ocean currents
island hopping: lower sea level and contents closer together
Paleocene Epoch
- plesiadapiforms
- “archaic primates”
Eocene Epoch
- Euprimites
- Adapoids and Omomyoids
Adapoids
Larger
small eyes
fruit and social
Omomyoids
smaller
larger eyes
nocturnal
insects and solitary
Ogligocene Epoch
“First monkeys”
-Tropical rain forest
anthropoids as well as (Adapoids and Omomyoids)
Miocene Epoch
The first hominoids
Proconsul apes
