- "A Tropical Rainforest in Colorado 1.4 Million Years After the Cretaceous-Tertiary Boundary", Kirk R. Johnson and Beth Ellis, SCIENCE, Vol 296, 28 June 2002. (Add PDF if ok'ed from Science)
- Manual of Leaf Architecture, Smithsonian Institution, 1999, Published and distributed by the Leaf Architecture Working Group.
- A 64.1 MILLION YEAR OLD TROPICAL RAINFOREST FROM CASTLE ROCK, COLORADO (ELLIS, Beth and JOHNSON, Kirk R), October 30, 2002, Colorado Convention Center.
- Fossil Leaves Suggest Asteroid Killed Dinosaurs
- Denver Basin Project, Denver Museum of Nature & Science
NationalGeographic.com, 6/17/2002,
- Follow a Plant Fossil - from quarry excavation to research and exhibit.
- Ancient Denvers - Travel back in time millions of years to witness Denver's astonishingly varied past!
- Ancient Denvers - The First Rainforest, Denver Museum of Nature & Science
- "Ancient Denvers: Scenes from the Past 300 Million Years of the Colorado Front Range" book, K. Johnson & B. Raynolds. Available at the museum. For ordering information, see the Denver Museum of Nature & Science's website - Ancient Denvers.
- WIPS (Western Interior Paleontological Society) - A Denver, Colorado nonprofit organization that primarily focuses on paleontology . All aspects of the earth sciences are encouraged, however, including geology, paleoarcheology and occasionally space sciences. WIPS is very active with educational programs held at the Petroleum Hall at the Green Center, Colorado School of Mines, Golden, CO. Members can participate in field trips and and digs; and receive the newsletter, "Trilobite Tales".
- Rules and Procedures: Historical, Prehistorical, and Archaeological Resources Act (#1308b 8CCR 1504-7) - Office of Archaeology and Historic Preservation State Historical Society of Colorado, Susan M. Collins, State Archaeologist
- Geological Maps of Colorado (at about.com)
- PALEOBOTANICAL ASSESSMENT OF THE HANNA BASIN, SOUTH-CENTRAL WYOMING: CORRELATING PALEOCENE LEAF MEGAFOSSILS AND PALYNOLOGICAL DATA WITH NORTH AMERICAN LAND MAMMAL AGES (DUNN, Regan E), October 30, 2002, Colorado Convention Center.
- THROUGH THE QUATERNARY LOOKING GLASS: THE MIDDLE EOCENE REPUBLIC FLORA OVER SHORT TIMESCALES (PASSMORE, Susan M., JOHNSON, Kirk R., REYNOLDS, Michele, SCOTT, Michon, and MEADE-HUNTER, Dena), October 30, 2002, Colorado Convention Center.
- THE PARACHUTE CREEK ATLAS PROJECT: AN OVERVIEW OF THE MEGAFLORA OF THE GREEN RIVER FORMATION FROM COLORADO AND UTAH (JOHNSON, Kirk R., BATEMAN, William, GRAHAM, Michael, MANCHESTER, Steven, and HANDLEY, Bruce), October 30, 2002, Colorado Convention Center.
- THE SCOTTY’S PALM FLORA: A DIVERSE MEGAFLORA WITHIN 300,000 YEARS AFTER THE K-T BOUNDARY ON THE WESTERN MARGIN OF THE DENVER BASIN, COLORADO (REYNOLDS, Michele L., JOHNSON, Kirk R., THOMASSON, Joseph R.), October 30, 2002, Colorado Convention Center.
- ANALYSIS OF FLORAL DIVERSITY THROUGH THE FIRST 1.4 MA OF THE PALEOCENE, EASTERN DENVER BASIN, COLORADO (BARCLAY, Richard S.), October 30, 2002, Colorado Convention Center.{etc. etc. - more later}