“Stephen Jay Gould (September 10, 1941 – May 20, 2002) was an American paleontologist, evolutionary biologist and historian of science. He was also one of the most influential and widely read writers of popular science of his generation. Gould spent most of his career teaching at Harvard University and working at the American Museum of Natural History in New York…
Gould’s greatest contribution to science was the theory of punctuated equilibrium which he developed with Niles Eldredge in 1972. The theory proposes that most evolution is marked by long periods of evolutionary stability, which is punctuated by rare instances of branching evolution. The theory was contrasted against phyletic gradualism, the popular idea that evolutionary change is marked by a pattern of smooth and continuous change in the fossil record.
Most of Gould’s empirical research was based on the land snail genera Poecilozonites and Cerion. He also contributed to evolutionary developmental biology, and has received wide praise for his book Ontogeny and Phylogeny. In evolutionary theory he opposed strict selectionism, sociobiology as applied to humans, and evolutionary psychology. He campaigned against creationism and proposed that science and religion should be considered two distinct fields, or “magisteria”, whose authorities do not overlap.”
Watercolor, pen & ink, ink wash
Part of my ongoing series of biologists, naturalists, and environmentalists which will be on display at Irvine Nature Center (www.explorenature.org) in Owings Mills, MD from May 18-July 30, 2011.
Prints available of any of the images in this series, for the usual prices- joanna at joannabarnum dot com
4″ x 6″- $5, or 4/$17
8.5″ x 11″- $10, or 4/$35
11″ x 17″- $30, or 4/$100
13″ x 19″- $40, or 4/$140