Study Guides (400,000)
CA (150,000)
McMaster (9,000)

BIOLOGY 1M03 Study Guide - Final Guide: Homo Heidelbergensis, Homo Erectus, Homo Rudolfensis

Course Code
Jon Stone
Study Guide

This preview shows pages 1-3. to view the full 9 pages of the document.
Wednesday, November 11, 2015
From Hominin to Homo
Biology 1M03
Early Homo
-Origins of Homo
~ 2.3million years ago
Larger brains
Smaller teeth
Australopithecus limb proportions — ie. long limbs
Rapid development — seen by looking at enamel (rate at which enamel is
-Homo habilis
(= ‘human (male) handy’)
1.4-2.3 mya
-East & South Africa
Taxonomic diversity
-Homo rudolfensis
-Morphospecies concept — you may see differences in the morphologies &
therefore categorize them as different species (subjectivity)
-Are they the same species or different species?
-1.8 mya to 12,000 years ago
Decreasing temperature
Greater fluctuations over time
-Climate in which our lineage is evolving

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

Wednesday, November 11, 2015
Homo ergaster
-= human (male) working
-related to early Homo
-0.6-1.8 million years ago
-River in Kenya (same location)
-KNM-ER 3733
-Supra orbital torus — large bone above the eye
-Zygomatic arch — cheek bones enlarged; wide face
-Jaw doesn't jut out
-Homo erectus?
Shows differences — morphospecies concept
Homo ergaster Morphology
Ancestral: postorbital constriction, no chin (compared to humans), receding
Derived: less prognathic, larger brain, smaller jaws & teeth compared to other
Unique: brow ridge, occipital torus (fairly well-pronounced)
-Post crania
Long legs, narrow hips, barrel chest (not like other primates, very humanlike)
Modern human body proportions
Reduced sexual dimorphism (more humanlike)
Language limited?
-Based on anatomy
Terrestrial biped; biped (legs)?
-Kimora Kimeu — famous archaeologist

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

Wednesday, November 11, 2015
Home ergaster: Tools & Substinence
-Acheulean industry
Mode 2
Biface (hand axe)
Specifically designed
-Carcass processing?
Unchanged for ~1million years
Homo ergaster: Meat Eating
-Hand axes plentiful
-Cut marks on animal bones
-Tooth anatomy
Large incisors
-KNM-ER (same region) 1808
Vitamin A poisoning?
When they looked at the bones, they looked rather weird & when they examined
sections of the bone, the bone is very disregular — vitamin a
Eating liver causes Vitamin A poisoning
-** Parasite diagram in textbook
Homo ergaster: Questions
-Hunting or scavenging?
Probably were both
-Cooking food?
800 thousand years ago, Israel, flints suggest hearths
Overlap with homo ergaster timeframe so it is possible that they did cook, but we
don’t see evidence until later
You're Reading a Preview

Unlock to view full version