This issue of the Canadian Journal of Earth Sciences is dedicated to Professor Glen Caldwell in honour of his extensive contributions to the field of paleontology and scientific publishing. After receiving his Ph.D. degree from the University of Glasgow in 1957, Dr. Caldwell joined the Department of Geological Sciences at the University of Saskatchewan, where he stayed for more than 30 years. During his tenure, he led the way in launching a new integrated curriculum, including paleobiology, geochemistry, and geophysics, and in organizing and equipping a vigorous research program. Dr. Caldwell also organized two international symposia on Cretaceous rocks of the Western Interior Basin of North America. Over the years he served on and made distinctive contributions to a wide variety of national and international professional organizations, including the American Commission on Stratigraphic Nomenclature, GAC, NSERC, and the International Union of Geological Sciences. Dr. Caldwell served as Vice-President (Research) of The University of Western Ontario from 1988 to his retirement in 1996. He continues to teach and serve various scientific organizations, and he remains a strong advocate for basic research grants.