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ANTH
Question | Answer |
---|---|
When do the Australopithecines date back to? | 4.2-1.98 mya |
Why is the Pliocene epoch significant? | Rapid increase in unambiguously bipedal hominins in East and Southern Africa. |
Ardipithecus Ramidus- how old? | 4.4 mya |
How tall was "Ardi" and how much did she weigh? | 4 ft tall, 120 pounds |
What makes Ardi more human like than her sister species Ar. Kdabba? | Her canine teeth |
What is the paleo environment of the Middle Awash Region? | Densely forested |
Although Ardi had a rigid foot suited for upright walking, what did she have that still resembled an ape like quality? | Opposable big toe |
How many years does the Pliocene Epoch date back to? | 5.5 mya |
What about Ardi's pelvis indicated she was a biped? | Bowl-shaped |
How many species does the genus Australopithecus include? | 5 species |
Name the East African species of Australopithecus | Au. anamensis (4.2-3.9 mya) Au. afarensis (3.6- 3.0 mya) Au. garhi (2.5 mya) |
Name the Southern African species of Australopithecus | Au. africanus (3.0-2.2 mya) Au.sediba (1.98 mya) |
Name the three species of Paranthropines | P. aethiopicus (2.5 mya) P. boisei (2.2-1.3 mya) P. robustus (1.8 mya- 1 mya) |
Name the one known species of Keyanthropus | Kenyanthropus platyops |
What is known about Kenyanthropus platyops? | It was undoubtedly bipedal |
Name the two species concept models | Ecological species concept and Biological species concept |
What is the biological species concept? | A species is any group of organisms that can interbreed to produce fertile offspring, and is reproductively isolated from other groups. |
What is the ecological species concept? | A species is any group of organisms adapted to a particular set of resources (niche). In this concept, both form and behaviour help define the species. |
What concept does a lumper subscribe to (ecological/biological)? | Biological Species Concept |
What concept does a splitter subscribe to (ecological/biological)? | Ecological Species Concept |
Big molars with thick enamel are characteristic of what genus? | Paranthropus |
What type of diet do the big molars of the Paranthropines suggest? | A diet full of tough, fibrous vegetation, roots, tubers and nuts |
Why is Kenyanthropus platyops hard to classify? | It combines traits of Paranthropines and Australopithecines |
Where does the East African rift system run? | Runs from the Afar depression in NE Ethiopia, south to Malawi |
What does the East African rift system look like? | Rift valleys, inactive and active volcanoes |
How is a rift valley created? | Magma forces tectonic plates apart, creating a collapsed area between the edges of the plates |
What is the earliest known member of the genus Australopithecus? | Australopithecus anamensis |
What species is "Lucy" a part of? | Afarensis |
Australopithecine qualities | Generally absent sagittal crest, weak supraorbital tori, small molars, |
Paranthropus qualities | Present sagittal crest, strong supraorbital tori, thick molars |
What epoch did hominins originate in? | Upper Miocene- Lower Pliocene |
Why is Dmanisi (Georgia) important? | site of the earliest Hominin fossils outside of Africa |
Where was Homo naledi discovered? | Bright Star Cave, South Africa |
Homo naledi is a mix of what genus'? | Australopithecus and Homo |
Which species are associated with Oldowan tools? | H habilis, H rudolfensis, H ergaster |
What evidence do we have that Oldowan tool makers/users were scavenging for meat? | Animal bones found at hominin sites have been broken for marrow extraction. If more fat and protein was available, this would not have been necessary. |
Why does animal fat and protein become increasingly more important as the genus Homo progresses? | Larger brain size requires more energy that comes from animal fat and protein |