A database listing the diversity of life at the family level through time. Edited by M.J. Benton in 1993, it is made available by the University of Bristol.
Electronic version of the paper-printed book edited by Derek Briggs and Peter Crowther in 1990. This reference volume was made available thanks to the support of the Palaeontological Association, London.
A late edition (1909-14) in the Harvard Classics of the seminal book: "Origin of Species"
2005 electronic reprint of the 1989 technical monograph edited by S.G. Lucas and A.P. Hunt and published by the New Mexico Museum of Natural History.
Second and revised edition (1999) prepared by Peter Hoen of the illustrated glossary for Palynology published by Wim Punt, Stephen Blackmore, Siwert Nilsson and Annick Le Thomas in 1993.
A publication of the U.S. Geological Survey by R.J. Litwin, R.E. Weems & T.R. Holtz, Jr.
A publication of the US geological Survey by L.E. Edwards & J. Pojeta, Jr.
The St. Louis Code is the currently effective edition of the code, adopted by the Sixteenth International Botanical Congress at St Louis, Missouri, July-August 1999.
This richly illustrated book authored by John Pojeta, Jr. and Dale A. Springer is available free online by the American Geological Institute. It is one of the most impressive textbooks of the AGI collection.