Week 3 Quiz

A  Acheulean

B  Sahelenthropus tchadensis

C  Sagittal keel

D  Homo erectus

A  The Dmanisi were found in Georgia outside of Africa and date back to 1.8 mya, which pushes the date of migration by Homo erectus back nearly 1 million years.

B  The Dmanisi were very small in stature and lacked the features we originally believed Homo erectus needed in order to travel long distances outside of Africa.

C  The Dmanisi were still using Oldowan tools, but anthropologists believed Homo erectus needed to use more advanced tools in order to meet their energy budget.

D  The Dmanisi were found to be advanced hunters, which negated the theory that Homo erectus migrated because they were following animals they scavenged from.

A  Thinner browridge that ancestors

B  Long, low braincase

C  Sagittal keel

D  950 cc average brain size

A  Homo erectus

B  Homo sapiens

C  Sahelenthropus tchadensis

D  Australopithecus afarensis

A  Longer toes

B  Longer legs

C  Stabilized foot arch

D  Barrel shaped rib cage

A  Since Homo habilis had wider finger pads for greater precision dexterity, the brain needed to evolve to allow for greater creativity.

B  Homo habilis began consuming larger amount of food, which allowed their brains to increase in size.

C  The climate had remained relatively stable in Africa for millions of years until about 2.5 million years ago, when climate began to fluctuate very rapidly.

D  Australopithecines began hunting, which helped their brains grow.

A  Decrease in facial prognathism

B  A dramatic increase in average cranial volume from 440 cubic centimeters to 700 cubic centimeters

C  Thicker brow ridge than its ancestors

D  Wider finger pads for precision grip

A  She was an infant, and infant fossils are less common in the fossil record

B  Selam was an elderly fossil, which showed us how early Australopithecines started aging

C  An endocast allowed us to learn about the maturation rate of Australopithecus afarensis

D  Selam’s fossil contained her entire skull and spinal cord

A  She was not capable of bipedalism

B  She had large, thick molars and sexually dimorphic canines

C  Her brain size was roughly 440 cubic centimeters

D  Her legs were longer than her arms, but her arms were still long enough to brachiate

A  Early humans became bipedal to minimize the amount of sun on the individual’s back

B  Early humans became bipedal because it is more efficient for crossing savannahs than quadrapedalism.

C  Early humans became bipedal to free up their hands in order to carry food

D  Early humans became bipedal to free up their hands to make weapons

A  Ape feet have short toes to help with balance

B  The bipedal human foot contains a plantar aponeurosis for elasticity

C  Ape feet have a divergent and opposable big toe

D  The bipedal human foot contains an arch for shock absorption

A  Human due to the forward facing iliac blades.

B  Ape due to the parallel femurs and forward facing iliac blades.

C  Ape due to the bowl shaped pelvis.

D  Human due to the flexible knee.

A  Omomyoids

B  Adapoids

C  Plesiadapiforms

D  Procunsul

A  Arboreal theory

B  Arboreal – Predation – Angiosperm Exploitation theory

C  Visually oriented predation theory

D  Angiosperm exploitation theory

A  Continental drift killed off the majority of insects on earth, causing primates to have to find new resources.

B  Changes in the size and shape of the continents over time has impacted climate by redistributing warm and cold water around the world.

C  Changes in the distribution of the continents lead to a decline in forested areas and an incline in open grasslands and savannahs during the Oligocene.

D  Changes in the distribution of the continents lead to a decline in tropical rainforests and and incline in flowering and deciduous trees during the Paleocene.