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49 Cards in this Set
- Front
- Back
Human Origins, about how many years ago?
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7-1.9 million years ago
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(Ages)
The Cenozoic Era- |
The Age of Mammals, ca. 65 MYA to Present
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(Ages)
Miocene Epoch- |
Primate Evolution, ca. 23.5-5.2 MYA
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(Ages)
Pliocene Epoch- |
Hominid Evolution, ca. 5.2-1.8 MYA
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(Ages)
Pleistocene Epoch- |
ca. 1.8/1.6 MYA to 11 KYA ("Ice Age")
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(Ages)
The "Ice Age" (Pleistocene Epoch)- |
Was actually the Fluctuating temperatures between glacial (cold) periods and interglacial (warm) periods, but mostly cold (thus the term,_____).
Sea level drops during a glacial period (water is locked into ice caps) and rises during interglacial periods (ice melts, returning water to the seas) |
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(Ages)
Holocene Epoch- |
ca. 11 KYA to present (recent warm period.
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The Primate Order-
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the biological order that contains lemurs, lorises, tarsiers, monkeys, apes and humans.
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Prosimians-
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Suborder of primitive or proto monkeys
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Anthropoids-
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The suborder of monkeys, apes and humans ("man-like" creatures)
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Hominids-
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The family of ancestral and modern humans.
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Humans(Homo sapiens)
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share a common ancestor with the Pongids some ca. 8-6 MYA
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Fossil Ancestors: Pre-Australopiths and Australopithecines-Consist of-
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Sahelanthropus tchadensis
Orrorin tugenensis Ardipithecus ramidus Australopithecus anamensis Kenyanthropus platyops Australopithecus afarensis Australopithecus bahreghazali Australopithecus africanus Australopithecus garhi. |
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Where is the earliest evidence for hominid and human fossils found?
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Africa ("the cradle of human kind") and nowhere else.
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Sahelanthropus tchadensis |
7-6 MYA. Not sure what looked like.
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Orrorin tugenensis- |
6-5 MYA. Not sure what looked like.
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Ardipithecus ramidus- |
4.5 MYA, Do not know what looked like.
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Australopithecus anamensis |
4.17-4.0 MYA, Chimpansee-like.
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Kenyanthropus platyops- |
3.5-3.2 MYA, Chimpansee-like
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Australopithecus afarensis- |
(3.75)3.5-3.0 MYA, Chimpansee like
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Australopithecus bahrelghazali- |
3.5-3.0 MYA, Chimpansee-like.
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Australopithecus africanus- |
3.0-1.5 MYA, Chimpansee-like
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(Our fossil ancestors)/(Pre-Australopiths and Australopithecines)
Australopithecus garhi- |
2.5 MYA, Chimpansee-like
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Fossil Ancestors: Robust Australopithecines-
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3.0-1.0 MYA. Consists of:
Paranthropus aethiopicus Paranthropus boisei Paranthropus robustus |
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(Fossil Ancestors: Robust Australopithecines)
Paranthropus aethiopicus- |
2.7-2.3 MYA, Gorrilla-like
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(Fossil Ancestors: Robust Australopithecines)
Paranthropus boisei- |
2.3-1.3 MYA, Gorrilla-like
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(Fossil Ancestors: Robust Australopithecines)
Paranthropus robustus- |
2.0-1.5 MYA, Gorrilla-like
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Fossil Humans:
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Homo habilis
Homo rudolfensis Homo ergaster Homo erectus Homo heidelbergensis Homo antecessor Homo neanderthalensis Homo sapiens |
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(Fossil Humans)
Homo habilis- |
ca. 2 MYA
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(Fossil Humans)
Homo rudolfensis- |
ca. 2 MYA
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(Fossil Humans)
Homo ergaster- |
1.9-1.6 MYA
Brain capacity of about 750cc. |
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(Fossil Humans)
Homo erectus- |
1.6 MYA-50 KYA (???),
Brain capacity of 775-1300 cc/ about 1000 cc avg. |
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(Fossil Humans)
Homo heidelbergensis- |
800-130 KYA
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(Fossil Humans)
Homo antecessor- |
>780 KYA
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(Fossil Humans)
Homo neanderthalensis- |
200-27 KYA,
Brain capacity of 1000-1500cc |
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(Fossil Humans)
Homo sapiens- |
130 KYA- Present (130 KYA in Africa; 90 KYA in Mid-East),
Brain capacity of 1350cc |
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First humans suggested characteristics:
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-Absolute brain size of 600 cc
-Possession of language (inferred from brain casts) -Precision grip and opposable thumb -Stone tool manufacturing (2.5-2.6 MYA) Problems: 1) the brain size threshold appears to be crossed later when it exceeds 1000 cc with H. erectus; 2) language cannot be inferred from brain casts; 3) chimps and Australopithecines had opposable thumbs (and if chimps can make tools, A. could also probably make tools); 4) stone tools date to a period when either Australopithecines or Homo could have been the first tool makers. |
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Bipedalism
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6-4.5 MYA
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Butchering-
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2.5 MYA
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Stone Tool Technology:
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Pre-Oldowan
Oldowan Acheulean Mousterian Upper Paleolithic |
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(Stone Tool Technology:)
Pre-Oldowan- |
3.1-2.6 MYA, Australopithecus?/ Early Homo
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(Stone Tool Technology:)
Oldowan- |
2.6-1.5 MYA, Australopithecus?/ Early Homo
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(Stone Tool Technology:)
Acheulean- |
1.5 MYA- 200 KYA,
H. erectus |
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(Stone Tool Technology:)
Mousterian- |
200-40 KYA,
H. Neanderthalensis/ H. Sapiens |
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(Stone Tool Technology:)
Upper Paleolithic- |
90/40-12 KYA,
H. Neanderthalensis/ H. sapiens |
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Larynx-
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Voice box
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High larynx-
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Most mammals have this. It limits sound production.
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Low larynx-
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Humans have this. Allows for the production of a greater range of sounds (acts sort of like an "echo chamber")
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Some analyzation of the skull-
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Australopithecines had flat skull bases (4-1 MYA), H. erectus had a slightly curved skull base (1.5 MYA), and that modern curvature to the skull base was reached only about 300 KYA (suggesting that prior to 300 KYA, hominids had a limited range of sound production).
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