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13 Cards in this Set
- Front
- Back
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Plesiadapid forms
When |
Epoch is Paleocene
appeared 65-50mya |
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homonoids
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apes, humans and their ancestors
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hominins
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humans and their ancestors
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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) |
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Afropithecus
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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 |
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Kenyapithecus
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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 |
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Dryopithecus
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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 |
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Gigantopithecus
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Late Miocene 10.4-5/5.5 mya
Africa Huge wookie, sasquatch like |
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Early miocene forms-3
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1) Proconsulids
2) Afropithecus 3) Morotopithecus |
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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 |
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Plesiadapid forms
traits that indicate that they are not primates (3) |
-no post orbital bar
-claws -huge, rodent like incisors |
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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 |
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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 |
