He described as first the geological timescales.

The Eratosthenian period in the lunar geological timescale is named after this crater.

Under the right conditions, and over geological timescales, the remains of living organisms can be transformed into fossil fuels.

The change from 26 to 27 million years is expected based on a 3% "stretch" in the geological timescale since the 1980s.

The geological timescale has all systems in the Phanerozoic eonothem subdivided into series.

It shares its name with the Rupelian age (34 to 28 million years ago) of the geological timescale.

Natural anhydrite does not react with water, even over geological timescales, unless very finely ground.

He proposed the Devonian period of the geological timescale.

It also focuses on the evolution of plants and animals during different time periods in the geological timescale.

The geological timescale was developed during the 19th century based on the evidence of biostratigraphy and faunal succession.