Example Sentences

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Data-set formats are aligned with other geochemical, petrological and geochronological data.

From Nature • Jun. 3, 2019

We were dazzled by the high concentrations of fossils, the deep sedimentary sequences, and the presence of volcanic ash, which would help determine a firm geochronological framework.

From Nature • Nov. 20, 2014

With the discovery of Orellan apatemyids the geochronological range of the family in North America is shown to extend from the Torrejonian through the Orellan land-mammal ages.

From Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan by Clemens, William Alvin

Two fossils of Orellan age, found in northeastern Colorado and described here, demonstrate that the geochronological range of the Apatemyidae extends into the Middle Oligocene.

From Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan by Clemens, William Alvin

The family Apatemyidae has a long geochronological range in North America, beginning in the Torrejonian land-mammal age, but is represented by a relatively small number of fossils found at a few localities.

From Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan by Clemens, William Alvin