They are correct that punctuated equilibria apply to sexually reproducing organisms and that morphological evolutionary change is regarded as largely (if not exclusively) correlated with speciation events. However, they err in suggesting that we attribute stasis strictly to "developmental constraints," which represent only one of a set of possible mechanisms that we have suggested for the causes of stasis. Others include habitat tracking and the internal structure of species themselves [for example, (2)].

Comprehensive evaluation and study of man's theories and knowledge of genetical characteristics and the evolutionary processes.

Provides a thorough overview of historical and contemporary theories of evolution, discusses key concepts and terms, and argues that our understanding of evolution has changed the beliefs and values of modern humankind. Reprint. 30,000 first printing.

Much of Stephen Jay Gould’s legacy is dominated by his views on the contingency of evolutionary history expressed in his classic Wonderful Life. However, Gould also campaigned relentlessly for a “nomothetic” paleontology. How do these commitments hang together? I argue that Gould’s conception of science and natural law combined with his commitment to contingency to produce an evolutionary science centered around the formulation of higher-level evolutionary laws.

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