TDA Cockerell, an entomologist at the University of Colorado who specialized in bees, was also an avid fossil collector and was the first to discover and describe many of the fossil insect from ...

Fossil leaves may reveal climate in last era of dinosaurs Smithsonian research geologist Richard Barclay holds a tray of late Cretaceous ginkgo leaf fossils from Alaska’s North Slope.

23 million-year-old mummified leaves might give us a peak at how plants might respond to our changing climate in the distant future. In a study published on August 20 in the journal Climate of the ...

A distinctive fan-shaped ginkgo leaf in the Fossils Atmospheres Project is seen in the morning sun at the Smithsonian Research Center in Edgewater, Md., Tuesday, May 18, 2021.

Rich Barclay, Smithsonian research geologist and Director of the Fossil Atmospheres Project, holds a tray of Late Cretaceous ginkgo leaf fossils from Alaska's North Slope in the archives of the ...

A distinctive fan-shaped ginkgo leaf in the Fossils Atmospheres Project is seen in the morning sun at the Smithsonian Research Center in Edgewater, Md., Tuesday, May 18, 2021.

A distinctive fan-shaped ginkgo leaf in the Fossils Atmospheres Project is seen in the morning sun at the Smithsonian Research Center in Edgewater, Md., Tuesday, May 18, 2021.

Now he wants to know what pores in the fossilized ginkgo leaves can tell him about the atmosphere 100 million years ago. But first he needs a codebreaker, a translation sheet — sort of a Rosetta stone ...

Distinctive fan-shaped ginkgo leaves at the Fossils Atmospheres Project at the Smithsonian Research Center in Edgewater, Md., on May 18. Carolyn Kaster / AP file ...