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100 million-year-old amber piece with lizard leg and mycomycete (arrow).

100 million years in amber: Researchers discover oldest fossilized slime mold

The skull of the juvenile T. rex, "Jane", was slender with knife-like teeth, having not yet grown big enough to crush bone.

Researchers learn more about teen-age T. rex

Fossil cast of a fin from a juvenile Sauripterus taylori, a late Devonian fish with primitive features of tetrapods.

How fish fins evolved just before the transition to land

Artist’s depiction of an ornithopod dinosaur tending its nest.

Baby dinosaurs found in Australia

The specimen will be stripped of the scientific name Mongolarachne chaoyangensis and rechristened as a crayfish

A ‘Jackalope’ of an ancient spider fossil deemed a hoax, unmasked...

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

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