These crickets, members of the class Saltatoria, are among the countless living things that have survived unchanged over the course of tens of millions of years. Crickets alive 125 million years ago were identical to those living today. This "sameness" revealed by the fossil record has inflicted a grave disappointment on evolutionists. Stephen Jay Gould, one of the 20th century"s most prominent evolutionists, expressed this disappointment in these terms: "Indeed, it is the chief frustration of the fossil record that we do not have empirical evidence for sustained trends in the evolution of most complex morphological adaptations." (Stephen Jay Gould and Niles Eldredge, "Species Selection: Its Range and Power," Scientific correspondence in Nature, Vol. 334, 07 July 1988, p. 19)