Essays include: Punctuated Equilibrium and Macroevolution (K Stereiny); Margins of Cladistics: Identity, Difference and Place in the Emergence of Phylogenetic Systematics 1864-1975 (R Craw); Against Otogeny (J Morss).
Part 1 Beyond natural selection: models of cultural evolution, E. Sober; punctuated equilibrium and macroevolution, K. Sterelny; margins of cladistics - identity, difference and place in the emergence of phylogenetic systematics 1864-1975, R. Craw. Part 2 Central concepts of evolutionary theory: adaptive explanation and the concept of a vestige, P. Griffiths; selection, drift and the aims of evolutionary theory, T. Shanahan. Part 3 The developmental systems approach: death of the gene - developmental systems strike back, R. Gray; ontogeny and phylogeny - a case of metarecapitulation?, S. Oyama; against ontogeny, J.R. Morss.