1. The Precambrian-Cambrian boundary Publication/Creation: Oxford : Clarendon Press, 1989. New York : Oxford University Press, 1989 Resource Type: Book Access & Availability: Loading
2. Wonderful life : the Burgess Shale and the nature of history Author/Creator: Gould, Stephen Jay Publication/Creation: New York : W.W. Norton, [1989] Resource Type: Book Edition: 1st edition. Access & Availability: Loading
3. The emergence of animals : the Cambrian breakthrough Author/Creator: McMenamin, Mark A. Publication/Creation: New York : Columbia University Press, 1990 Resource Type: Book Access & Availability: Loading