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13 Cards in this Set

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Plesiadapid forms
When
Epoch is Paleocene
appeared 65-50mya
homonoids
apes, humans and their ancestors
hominins
humans and their ancestors
Proconsulids
When did they appear when did they decline
Appearance: Early Miocene- 23-16.5 mya
decline in middle of miocene (16.5-10.4 mya)
Afropithecus
Early miocene, 20-17 mya

Postcranially identical to proconsul but has a diet of harder objects thus has thick jaw and thick enamel
+teeth changed in a hominoid direction
Kenyapithecus
Middle Micocene 16.5-10.4 mya
first contender as ancestor for African Great Apes

Stronger jaw, can eat hard rhined fruits, thick enamel

Appears in Africa as a result of the dryer and cooler climate, turning open fields and different diets
Dryopithecus
Middle Micocene 16.5-10.4 mya
second contender as ancestor for African Great Apes

Appears in Europe--adaptive radiation from africa to europe when europe and africa collide
Gigantopithecus
Late Miocene 10.4-5/5.5 mya
Africa

Huge wookie, sasquatch like
Early miocene forms-3
1) Proconsulids
2) Afropithecus
3) Morotopithecus
Plesiadapid forms
Traits that are potentially indicative of primate status (3)
+Generalized body of primate w. mobile ankles and forelimbs that suggest arboreality
+Molar a little less spikey
+ Quaditory bulla
Plesiadapid forms
traits that indicate that they are not primates (3)
-no post orbital bar
-claws
-huge, rodent like incisors
Proconsulid
Traits skull/brain/dentition
(3)
+ brain is more complex, more convolutions, but relative brain size is of a monkey
+ear is tube-like
+dentition is 2.1.2.3. simple molars, frugivorous
Proconsulid
Postcranial (6) 3--indicate primative traits 3 indicate derived traits
Postcranial traits:
+ scapula beginning to move back
+no tail
+mobility of shoulder, elbow, wrist and hip in beginning stages
-arms are not longer than legs
-narrow and deep ribcage
-pretty flexible spine