Relief shown by satellite imagery.
Panel title.
"Supplement to National Geographic, May 1998."
"Printed March 1998."
Includes text.
Ancillary maps: [Arctic region] -- Antarctica -- Earth's crust -- Climatic zones.
Text, global temperature chart, time line, and col. ill. on verso.
Maps on verso: 650 million years ago -- 514 million years ago -- 390 million years ago -- 237 million years ago -- 94 million years ago -- 65 million years ago -- 50 million years ago -- 18,000 years ago.