Earth

The age of Earth’s inner core revised

Closeup of the stomach area of a fossil ichthyosaur, Guizhouichthyosaurus, showing part of the body of another large marine reptile. The ichthyosaur had swallowed its prey shortly before it died and was fossilized. This is the oldest known direct evidence of megapredation, or a large animal eating another large animal. (Da-Yong Jiang, et al.)

Ichthyosaur’s last meal is evidence of Triassic megapredation

Vertebrae from the torso of the long-necked dinosaur "Arapahoe"

How dinosaur research can help medicine

Manakacha Trackway. Credit: Stephen Rowland

Cliff collapse reveals 313-million-year-old fossil footprints in Grand Canyon National Park

The structure of the trabecular, or spongy bone that forms in the interior of bones, is unique within dinosaurs, according to a recent study by SMU paleontologists and others.

Dinosaurs’ unique bone structure key to carrying weight

Fossil deer toe bones

Fossils reveal diversity of animal life roaming Europe 2 million years...

Scientists identified a new ichnospecies from the shell of an extinct marine turtle fossil, the first known species coexisting on living marine vertebrates

Life in a nutshell: New species found in the carapace of...

Roughly 66 million years ago an asteroid slammed into the Yucatan peninsula. New research shows darkness, not cold, likely drove a mass extinction after the impact. Credit: NASA

Fossil Pollen Record Suggests Vulnerability to Mass Extinction Ahead

-A grain-size comparator chart (to scale). The chart shows the different size fractions from silt (63 µm) through to large cobbles (128256 mm). Such charts are useful for field comparisons.

Grain Size : What is Grain Size? How is Grain Size...

Phenotypic difference between each specimen for each landmark in the 11-module dataset and the mean skull shape.For each specimen, the mean landmark configuration is plotted with points coloured relative to the Procrustes distance between the position of that point in the mean shape and in that specimen. Warmer colours denote landmarks having higher displacement from the mean, and cooler colours are more similar to the mean shape. Data and code archived at www.github.com/rnfelice/Dinosaur_Skulls . Credit: Felice et al, 2020 (PLOS Biology, CC BY 4.0)

Bird skull evolution slowed after the extinction of the dinosaurs

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