In a 1975 article, Harper critiqued a recent competitior of this theory, claiming that it presented a contrary rather than a 
In a 1975 article, Harper critiqued a recent competitior of this theory, claiming that it presented a contrary rather than a contradictory case. Sometimes characterized by its critics as the "synthetic theory," one critic of this idea took his inspiration from Richard Goldschmidt's concept of the "hopeful monster." Robert Ricklefs proposed a mathematical model of this theory that uses an exponential equation in situations where timescales are small compared to the speciation time, and those who argue against this theory claim that the fossil record lacks a sufficient number of transitional forms to support it. A theory that contradicts this one has been proposed by Niles Eldredge and Steven Gould. For ten points, identify this theory of evolution which is opposed to punctuated equilibrium.
In a 1975 article, Harper critiqued a recent competitior of this theory, claiming that it presented a contrary rather than a contradictory case.
phyletic gradualism