Chapter 11 - Paleoanthropology: Reconstructing Early Hominin Behavior And Ecology Flashcards
A pattern of evolution in which the rate of evolution in one functional system varies from that in other systems
Mosaic Evolution
Behavioral aspects of human adaptation
Culture
Evolutionary group sharing a single ancestor
Monophyletic
All great apes and humans
Hominid
Extant and extinct humans
Hominin
Study of ancient humans
Paleoanthropology
Objects made for use by hominins
Artifact
Study of how bones and other materials came to be buried and preserved
Taphonomy
Environmental setting
Context
Tells if something is older or younger, not by how much
Relative dating
Gives an estimate in actual number of years
Chronometric or absolute dating
Study of the sequential layering of deposits
Stratigraphy
States that a lower stratum is older than a higher stratum
Principle of superposition
Method of relative dating which applies only to bones
Fluorine analysis
1-5 million-year range
Potassium-Argon method
Wider chronological range, smaller samples
Argon-Argon method
Measuring dates of rock matrix
Uranium-Lead
1000-75000 years, accuracy reduced for materials 40000+ y/o
Carbon-14
Time period in which one half of the ampunt of radioactive isotope is converted chemically to a daughter isotope
Half-life
Technique of dating materials that were heated
Thermoluminescence
Measuring trapped electrons (dental enamel)
Electron spin resonance (esr)
Relies on radioactive decay of short-lived uranium isotopes
Uranium series dating
Dating based on evolutionary changes
Faunal correlation or biostratigraphy
Dating method based on shifting magnetic poles
Paleomagnetism
Stones suitably sized and shaped to be further worked into tools
Blanks
Fragment removed from the core
Flake
Stone reduced by flake removal
Core
Stone tools
Lithic
People who make stone tools
Knappers
Striking a core or flake with hammerstone
Direct percussion
Small stone tools
Microliths
Removing flakes by pointed implements
Pressure flaking
Polishes, striations, microscopic changes
Microwear
Microscopic silica structure formed in the cells of many plants
Phytoliths
An interpretation that links simple environmental changes directly to a major evolutionary shift
Environmental determinism
Isotopes of carbon produced in plants
Stable carbon isotopes