Terms in this set (26)
Drag and drop the terms in the chronological order that these important evolutionary events occurred.
evolution of bidepadlism, increase in enamel thickness, regular use of stone tools, enlargement of brain to around 1,450 cc
True or False?
Australopithecus anamensis is the oldest species currently known in the genus Australopithecus
Match the physical features on the left to the type of locomotion on the right
Biped: valgus knee, shortened pelvis
Quadruped: straight knee, elongated pelvis
Which of the following statements about Australopithecus platyops is true?
-Australopithecus platyops is associated with a woodland habitat
-Has a relatively flat face
-One of the most poorly represented hominins
Which of the following are features of the pre-australopithecine Orrorin tugenesis?
-found in the Tugen hills
-bipedal femurs, but no knee joint
Place the following australopithecines in the chronological order in which they likely lived, from oldest to most recent
(a to z order)
Australopithecus anamensis, Australopithecus afarensis, Australopithecus garhi, Australopithecus sediba
Many features distinguish modern humans from the nonhuman apes. However, only two of these features define hominins. Why?
-These two traits arose in the common ancestor of all hominins, but are not found in the nonhominin apes
-Proper taxonomic groups are always defined by the traits that are shared among members of the group but not found in closely related species
-The evolution of hominins involved several different changes that happened at different times. Only two of these features evolved early enough to apply to all the hominins
Which of the following facts falsify Charles Darwin's hunting hypothesis?
-Bipedalism arose early in hominin evolution, and large brains emerged millions of years later
-Bipedalism arose early in hominin evolution, while intensive use of chipped stone tools appeared much later
The numerous parallel dotted lines on this map indicate the location of an important feature on the landscape. What is it?
East African Rift
Differentiate the characteristics of hominin (including human) canines from those of nonhuman, ape canines
Hominin: wear on the tip of the canines
Nonhuman Ape: large pointed and projecting upper canines, wear on the back of the canine, diastema
Drag the descriptions to the appropriate hominin lineages
Pre-australopithecine, Robust australopithecines, genus Homo
Which of the following are accurate descriptions of both Australopithecus aethiopicus and Australopithecus boisei
-Had enormous chewing muscles indicated by the large attachment areas and a sagittal crest
-Had very large molars (cheek teeth)
-Also known as robust australopithecines
The earliest chipped stone tools are generally called _______ and the earliest of these tools date to about ____ mya.
Mary and Louis ______ worked for years at the famous hominin site of _________ in the country of Tanzania, where they located numerous archaeological sites and hominin remains.
Leakey, Olduvai Gorge
Which dental traits characterize the hyper-robust australopithecines?
Large molars, Large lower jaw
Choose the correct statement about nonhoning chewing and bipedalism
They preceded speech and the use of stone tools by several million years
You are an anthropologist who has studied early hominin bones and concluded that there is a high degree of sexual dimorphism in body size in those species. What are the implications of your argument?
Your argument falsifies Owen Lovejoy's provisioning hypothesis because his hypothesis requires a decrease in sexual dimorphism
Place the distinguishing features of the pre-australopithecines and australopithecines in the correct locations on the table
Pre-Australopithecine: Bones- vestiges of apelike arboreal adaptations, Brain- small brain
Australopithecine: Teeth- no honing on the canine and no diastema, fully reduced canines
Choose the factual statements about the site of Bouri
-Australopithecus garhi was found here
-Bouri is located in the Middle Awash, Ethiopia
-Only indirect evidence of stone tool use in the form of cut marks and smashed bones have been found here
Identify the phalanges bellow as primate, australopithecine, or human.
Most curved: nonhominin primate
Mid curved: australopithecine
You are presented with a fossil that was just excavated. This fossil skull has a flat face, large molars, and a prominent sagittal crest, suggesting it is:
Ardipithecus ramidus was a transitional species in many ways, with some features that were apelike, some humanlike, and others that were a mosaic of both. Place "apelike," "humanlike," or "mosaic" on the correct feature.
Top to bottom:
humanlike, mosaic, apelike, apelike
Match the following food acquisition behaviors to the hominin tool type or technology most likely used to carry it out.
Chipped Stone Tool Flakes: cutting meat or other foods
Cobbles or Choppers: smashing bone to access marrow
South African Bone Tools: digging into termite mounds or digging for roots
Which of these features are associated with bipedalism as seen in humans?
Short ilium, S shaped curve of the spine
Which two features primarily and consistentl distinguish hominins from apes?
Which of these characteristics are associated with Australopithecus afarensis?
Nondivergent big toe, Diverse diet indicated by diverse tooth wear