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A fossilized snail shell, ready to be analyzed in the laboratory

Earth was stressed before dinosaur extinction

An intimidating sight: Asfaltovenator vialidadi. Source: Gabriel Lio

Experiments in evolution

This slab of sandstone has been on display since 1896, showing off the scaly footprints of a prosauropod dinosaur. Scientists only recently realized that the deep grooves on the left may be the track of a sailing stone. Credit: Lull, R.S., 1915

Sailing stone track discovered ‘hiding in plain sight’ in dinosaur fossil

A modern-day sea lily in the Marianas region. Credit: (c) NOAA Ocean Research and Exploration

480 million year old fossils reveal sea lilies’ ancient roots

Illustration of the newly described Kupoupou stilwelli by Jacob Blokland, Flinders University. Credit: Jacob Blokland, Flinders University

When penguins ruled after dinosaurs died

New research is shedding light on how and where ancient flying reptiles called pterosaurs lived. Credit: Julius Csotonyi

95-million-year-old fossil reveals new group of pterosaurs

A representation of a plesiosaur - living reconstruction

Divers of the past : Plesiosaur – Why did the size...

Microscopic structures created in the lab. Credit: Sean McMahon

Solving fossil mystery could aid quest for ancient life on Mars

Distribution of springtails on termite and ant hosts within ~ 16 Ma old Dominican amber.

16-million-year-old fossil shows springtails hitchhiking on winged termite

CT scan-generated models of the jaws of Majungasaurus (left), Ceratosaurus (center) and Allosaurus (right), with microscopic views of the interior of their teeth below each model. Stripes running from upper left to lower right in each microscopic image are daily deposited incremental lines, which allow the amount of time it took for a tooth to grow to be reconstructed. Credit: PLOS ONE

Researchers determine dinosaur replaced teeth as fast as sharks

Reconstruction of Jeholbaatar kielanae. Credit: XU Yong

New Cretaceous mammal fossil sheds light on evolution of middle ear

A 91-million-year-old fossil shark newly named Cretodus houghtonorum discovered in Kansas

Fossil dig leads to unexpected discovery of 91-million-year-old shark new to...

The pink arrow points to the predentary and the blue arrow points to the upper portion of the jaw, which has no teeth. Together, they may have been covered by a keratinous beak, and the predentary was most likely mobile Credit: IVPP

New finding on origin of avian predentary in Mesozoic birds

Mammoth bones are pictured in Tultepec, Mexico in this handout photograph released by Mexico's National Institute of Anthropology (INAH)

Huge trove of mammoth skeletons found in Mexico

A fossilized mantle of a vampyropod, a relative to the vampire squid. The ink sacis the raised structure in the center, and muscles have a striated appearance. Credit: Rowan Martindale/The University of Texas at Austin Jackson School of Geosciences.

Exceptional fossils may need a breath of air to form

Opalized Ammonite

Research offers insight into how oldest fossils formed

Fossilised 20 centimetre long hand claw of theropod discovered at Eric the West site on Victoria’s Otway Coast. Credit: Stephen Poropat/Museums Victoria

Huge-clawed predatory dinosaur discovery in Victoria

Photograph of the traces analyzed: : Megalosauripus transjuranicus (A) y Jurabrontes transjuranicus (B). Credit: Matteo Belvedere et al.

Jurassic dinosaurs trotted between Africa and Europe

Ampyx priscus in linear formation (Moroccan Lower Ordovician Fezouata Shale). Credit: Jean Vannier, Laboratoire de Geologie de Lyon: Terre, Planètes, Environnement (CNRS / ENS de Lyon / Université Claude Bernard Lyon 1)

Fossils show lining up is primal urge

Gigantic dinosaurs like the sauropod Diplodocus, which weighed over 15 tons and was longer than an 18-wheeler truck, would have had problems with potentially lethal overheating. Hot blood from the body core would have been pumped to the head, damaging the delicate brain. New research shows that in sauropods, evaporation of moisture in the nose and mouth would have cooled extensive networks of venous blood destined for the brain. Other large dinosaurs evolved different brain-cooling mechanisms, but all involving evaporative cooling of blood in different regions of the head. Credit: Life restoration by Michael Skrepnick. Courtesy of WitmerLab at Ohio University.

Huge dinosaurs evolved different cooling systems to combat heat stroke

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