Eldredge, Niles.Gould, Stephen Jay.2014-12-092014-12-091972http://dx.doi.org/10.5531/sd.paleo.7http://hdl.handle.net/2246/6567Third draft of Eldredge and Gould, 1972.enPunctuated equilibria (Evolution)Speciation and Punctuated Equilibria: An Alternative to Phyletic Gradualism. [3rd draft]Other