Rates of Speciation: Theories for Interpreting the Fossil Record

Let’s explore the competing theories of phyletic gradualism and punctuated equilibrium. These models both seek to explain how new species evolve—either slowly or rapidly—based on fossil patterns.

Topics

  • AP
  • AP Biology
  • AP Bio
  • next generation science standards
  • NGSS
  • speciation
  • fossil record
  • phyletic gradualism
  • punctuated equilibrium