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fossils & paleontology

Frequent saltwater incursions make this area inhospitable, but certain microbes thrive in those conditions, creating extensive microbial mats that gradually turn into calcite and dolomite rock.
Posted inNews

Images Suggest a Viral Role in Some Rock Formation

Bas den Hond, Science Writer by Bas den Hond 26 March 201822 February 2022

Viruses might have helped transform dense bacterial colonies into a type of sedimentary rock that is frequently associated with underground oil reserves.

A trilobite fossil from the Burgess Shale in British Columbia, Canada.
Posted inNews

Rocks with Soft-Tissue Fossils Share a Mineral Fingerprint

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 20 March 201830 January 2023

Discovering new resting places of these rare and information-rich fossils will be critical to understanding the largest expansion of life in Earth’s history, according to researchers.

Posted inEditors' Highlights

Tracking Deep-Earth Processes from Rapid Topographic Changes

by T. Schildgen 23 February 201818 April 2022

Rapid elevation-rise in Turkey, tracked by marine sediments that now sit at 1.5 km in elevation, is linked to deep-Earth processes that can explain short-lived, extreme rates of topographic change.

Posted inEditors' Highlights

Plotting the Pliocene Polar Front

by E. Thomas 29 January 201824 January 2024

Understanding changing conditions in the south polar oceans during the warm late Pliocene period may help predict the impact of contemporary warming.

Fossil skeleton of a woolly rhinoceros
Posted inNews

Fossils Provide New Clues to Tibetan Plateau’s Evolution

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 12 December 201726 January 2023

The bones of ancient rhinos, elephants, and fish constrain when the Tibetan Plateau rose high enough to prevent migration, a move that forced animals to adapt to high-altitude conditions.

Fossil of an Ediacaran creature
Posted inFeatures

Hunting Rare Fossils of the Ediacaran

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 13 November 201730 January 2023

The search for fossil imprints and casts of squishy organisms takes time, perseverance, and sometimes a sprinkle of luck.

A computer rendering of a Brachiosaurus. Herbivores like brachiosaurs likely helped distribute nutrients through their poop.
Posted inNews

Signatures of Dinosaur Poop Found in Cretaceous Coal Seams

Katherine Kornei, Science Writer by Katherine Kornei 31 October 20174 October 2021

Coal analysis suggests that plant-eating dinosaurs, by walking kilometers between their picnic areas and their toilets, distributed important nutrients widely and boosted ecosystem health.

Dissolved silicon in ocean sediment reveal the hidden past of Pacific currents
Posted inResearch Spotlights

Microfossils Illuminate Ancient Ocean Currents

Elizabeth Thompson by Elizabeth Thompson 23 October 20174 May 2022

Researchers use dissolved silicon concentrations to map out how currents may have changed millennia ago in the Pacific.

Posted inResearch Spotlights

Earth's Carbon-Climate Feedbacks Varied in Past Warming Episodes

by Terri Cook 29 November 201626 January 2023

Records from drill holes in the eastern equatorial Pacific indicate that Earth's orbital eccentricity played an important role in controlling climate as the planet warmed.

cyanobacteria coated in clay minerals
Posted inNews

How Did Fragile Early Microbes Become Fossils?

Lucas Joel by L. Joel 12 August 201630 January 2023

During the Ediacaran period more than a half billion years ago, clay mineral coats likely shielded delicate remains, helping them become exquisitely preserved in rock, recent experiments suggest.

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Waterworks on Tree Stems: The Wonders of Stemflow

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