5 Flashcards
True or false? Richard Leakey discovered “Zinj” (OH5)
False
Which of the following chewing muscles were greatly enlarged in the species Australopithecus boisei?
Temporalis
True or false? The earliest (oldest) evidence of the genus Homo in the hominin fossil record is 2.2 million years old.
False
The hominin fossil sites surrounding Lake Turkana in East Africa, are primarily dated using which absolute dating technique?
Argon Dating
The late Pliocene is characterized by which type of trend, warming or cooling?
Cooling
Which of the following in NOT a characteristic of Australopithecus boisei?
Shallow Zygomatic
discovered Zinjanthropus (Australopithecus boisei) at Olduvai Gorge in 1959.
Mary & LSB Leakey
True or false? The “Dear Boy” specimen of Australopithecus boisei is from the lowest geological layer of Olduvai Gorge.
True
The sagittal crest, large cheek teeth, and other cranial adaptations lead scientists to believe that Australopithecus boisei ate mostly:
Roots and tubers
The Black Skull (KNM-WT 17000) has which of the following?
A prognathic (projecting) face
True or false? Australopithecus boisei was probably a carnivore.
False
Fossils of which of the following species have been discovered at Olduvai Gorge, Lake Turkana, Omo, Peninj, and Konso?
boisei
Which of the following best characterizes Homo when compared to Australopithecus?
increase in brain size and longer legs relative to arms correct
What type of bones on the faces of early Homo project more than those of Australopithecus?
nasal bones
True or false? The genus Homo is characterized by a general increase in brain size over time.
True
