Midterm Flashcards
diachronic
across time
Biological: evolutionary anthropology: Macroevolution (primate/hominin evolution
Cultural: archaeology (evolutionary, pre-historic, historic)
synchronic
across space
Biological: Evo Anthro: microevolution (human population genetics, growth and development, behavioral ecology)
Cultural: cultural/linguistic anthro (economic, political, historical, psychological, environmental, urban)
Solar System
4.57 bya
Impact and Formation of the Moon
4.53 bya
Late Heavy Bombardment
4.1 - 3.8 bya
Oldest datable rocks on Earth
4.031 +/- 0.003 bya
Geological evidence of life
stromatolites at 3.5 bya
spread proliferation of cyanobacteria
3 - 2.5 bya
oxygen produced
Metazoans
Variously 1.2 bya, 635 mya
End Ordovician
Lasts from 488 to 444 mya 86% of species 61% genera 22-24% of families ⅔ brachiopods and bryozoans ~100 families of marine life 2nd largest overall loss of life 2 pulses 0.5 to 1 my apart
Late Devonian
374 mya More prolonged crisis, 20-25 my Maybe 8-10 events 20% families 70-80% of species Tabulate corals and stromatoporoids (reef builders never really recover) Devonian Reef Placoderm: Dunkleosteus Trilobites and Ammonites
End Permian
251 mya
95% of marine species
70% of land families
57% of insect families (only mass extinction to really hit insects)
Plants relatively immune to extinction but a major ecological reorganization of plant life
End Triassic
201.6 mya
End Cretaceous
65.95 mya
Cosmopolitan vs. endemic taxa
Chance of extinction goes down with size of geographic range
