Spring '96 Evolution is a change from a no-howish untalkaboutable all-alikeness to a somehowish and in general talkaboutable not-all-alikeness by continuous sticktogetherations and somethingelseifications. - William James
Anomalocaris: the largest Burgess Shale animal, reaching lengths of 0.5 meters. (see Collins, 1996).
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	The panda's "thumb" is a bone from the wrist.

We are, it might be said, looking at the under side of the epigenetic surface, which is represented as a great sheet of canvas suspended at considerable height above our heads and sloping down towards the ground in the distance. This sloping surface is grooved into valleys along lines where it is dragged down by a complicated network of guy ropes, which are attached to pegs in the ground. These pegs represent the genes, and the tensions on the guy ropes the chemical forces which the genes exert. As the diagram indicates, the course and slope of any particular valley is affected by the chemical tendencies of many genes; if any gene mutates, altering the tension in a certain set of guy ropes, the result will not depend on the gene alone, but on its interaction with all the other guys. Waddington, C.H. (1957)

Collins, D. (1996) The "evolution" of Anomalocaris and its classification in the arthropod class Dinocarida (nov.) and order radiodonta (nov.). Journal of Paleontology 70, 280-293.

Panda's skeletal hand from: Gamlin, Linda (1993) "Evolution" Dorling Kindersley, London.

Waddington, C.H. (1957) The Strategy of Genes: A Discussion of Some Aspects of Theoretical Biology, George Allen & Unwin Ltd, London.