Human Evolution Final Flashcards
Allen’s rule
Mammals in hot climates have greater surface area than cold climates
Biological species
Species that can successfully interbreed and produce fertile offspring
Homology
Similarity that reflects common descent and ancestry
Homoplasy
Similarity via independent evolution
Superposition
Older layers of rock are covered by younger ones
Relative dating techniques
Use principles of stratigraphy. Ex:
Stratigraphic correlation
Biostratigraphic correlation
Faunal correlation
Absolute dating technique
Use a clock of some sorts
Ways the skeleton of a biped reflects its locomotion
Anterior foramen magnum, a-shaped spine, bowl-shaped pelvis, valgus angle of femur, large and rounded conduira on the proximal end of the tibia, robust calcaneus, lateral arch of the foot, addicted big toe
What time period are the earliest hominins from?
Late Miocene
What is a derived feature of sahelanthropus tchadensis?
Anterior foramen magnum
What hominid species did Raymond dart find?
Australopithecus africanus
Which species do some argue should be included in Australopithecus africanus?
Australopithecus prometheus
Which is the most recent ancestor of A. Afarensis?
Australopithecus anamensis
Autapomorphys of Paranthropus
Sagittal crest, flaring zygomatic, facial fishing
What are the three species of Paranthropus?
P. Robustus (South Africa)
P. Aetheopicus (east Africa)
P. Boisei (east Africa)
P. Aetheopicus likely gave rise to the other two
Were p. Boisei and P. Robustus contemporary?
Yes
Why is dating South African fossils more difficult than East African?
Lack of volcanic ash in South Africa
Which species has a sagittal keel?
Homo erectus
Which tools are associated with homo erectus?
Old pawn and acheulian tools
What is the geographic range of homo habilis
East and South Africa
How does homo habilis differ from homo rudolfensis?
H. Rudolfensis had a more robust face, larger brain case, and larger molars
Which species has a double arched supraorbital region?
Homo rhodesiensos, or h. Heidelbergensis
Where is homo antecessor found?
Spain
Which species has a retro molar space?
Homo Neanderthalensis