These fossilized foraminiferan shells, dating back 35 to 45 million years, were found in Tanzania. They all belong to species that are now extinct. The largest are about half a millimeter in diameter.

The History of the Ocean, as Told by Tiny Beautiful Fossils

Bountiful remains of foraminifera reveal how organisms responded to climate disturbances of the past. They can help predict the future, too.
Venezuela Tepui Highlands

Venezuela’s Mysterious Tepuis

Many species on the tepui summits are found nowhere else. How did those species get there?