Lab 3 - primate evolution PDF

Title	Lab 3 - primate evolution
Course	Biological Anthropology II: Darwin, Death, and Disease
Institution	Trent University
Pages	2
File Size	80.6 KB
File Type	PDF
Total Downloads	59
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Summary

Professor Jocelyn Williams...

Description

Paleocene: comparing Plesiadapiforms to primates

Features

Plesiadapiform

Primate

Relative size of brain

N/A

Large to body

Postorbital bar

No postorbital bar

Yes

Position of eye orbits

Laterally facing orbits

Forward facing eyes

Prognathism (length of snout)

Long snout

Short

Claws or nails

Claws

Nails

Possible dental formula

3.1.4.3

2.1.2.3

Incisors (type, appearance)

Large procumbent incisors

Eocene: Euprimates

Features

Adapids (Adapid)

Postorbital bar

Postorbital bar

Necrolemur

Postorbital closure Position of eye orbits

Forward facing eyes

Nocturnal or diurnal

Diurnal

Nocturnal

Mode of locomotion

Arboreal quadrupeds

VCL

Closely resembled which modern primate

Modern day lemurs

Living tarsiers

Snout length, relative to cranium Incisor size vs canine size Dental formula

Oligocene: anthropoids

Features

Aspidium (Parapithecidae)

Aegyptopithecus

Diurnal or nocturnal

Diurnal

Diurnal

Dental formula

2.1.3.3

2.1.2.3

Y-5 cusp pattern

Low rounded cusps on molar teeth

Y-5 cusp pattern on molars

Length of snout relative to cranium

Less fox-like snout

Long snout though small brain

Mode of locomotion

Quadrupedal

Arboreal quadruped

Postorbital bar

Miocene: Apes

Features

Proconsul

Dryopithecus

Relative to brain size

Large brain to body

Large brain

Y-5 cusp pattern

Y-5 pattern

Enamel thickness

Thin

Thin

Diet

Fruits

Soft fruits

Mode of locomotion

Quadruped

Arboreal suspensory

Sivapithecus

Arboreal quadruped...