The Most Precious Protomammal
The embryo is near-unprecedented find. Credit: Sophie Vrard
A trio of ancient embryos may reveal a potent secret as to how the protomammal Lystrosaurus survived one of the worst extinctions of all time.
Read MoreJust Call Her Venus of the Morning, Croc
Eosphorosuchus very rudely interrupted by Hesperosuchus in the middle of a Coelophysis snack. Credit: Julio Lacerda
In 1948, paleontologists collected big fossil blocks from Ghost Ranch, New Mexico. The better part of a century later, an unexpected, short-snouted croc has emerged from one of the blocks.
Read MoreThe Lizard in the River
Mosasaurs venturing into freshwater would have found abundant food. Credit: Christopher DiPiazza
A large tooth indicates that big mosasaurs, over 30 feet in length, swam the same rivers where dinosaurs like T. rex and Triceratops drank.
Read MoreThe Mother of Spiders, Horseshoe Crabs, and Things That Go Snap
The claws of Megachelicerax give away its relationship to spiders, horseshoe crabs, and other chelicerates. Credit: Masato Hattori
Paleontologists have uncovered the oldest known relative of spiders and horseshoe crabs, Megachelicerax, rewriting the story of how claws came out of the water.
Read MoreThe Scaly Sauropod Shimmer
A small patch of sauropod skin suggests long-necked dinosaurs were surprisingly colorful. Art by Tess Gallagher.
Patches of fossilized dinosaur skin contain long-sought clues to the coloration of long-necked sauropod dinosaurs.
Read MoreThe Gorgon Bird
The toothed bird Gorgonavis socializing in Early Cretaceous Spain. Art by Roc Olivé.
A resin-encased skull has revealed an unexpectedly snouty fossil bird - a bird with teeth.
Read MoreBaby Longnecks Were Jurassic Popcorn
Brachiosaurus was among the largest of the Morrison Formation sauropods, including at Dry Mesa.
Long-necked herbivores were titans of the Jurassic, but their offspring fed many carnivorous mouths.
Read MoreTyrant's Tooth Reveals Cretaceous Face Bite
“The Bite” by artist Jen Hall
A mystery tooth embedded in a dinosaur skull uncovers a surprising T. rex hunting strategy.
Read MoreTyrannoroter, the Plant-Munching Lump
Absolutely adorable, Tyrannoroter was one of the first herbivores on land. Art by Hannah Fredd.
A fossil skull found in an ancient tree has revealed a football-sized herbivore that was one of the first land-dwelling vertebrates to eat plants.
Read MoreAll Devils Are Born With a Name
The prehistoric sawshark Pochitaserra patriciacanalae (above) and the ray Dasyatis manuelcamposi (below). Credit: Carlos Espinosa Bustos
Tiny teeth found in Chile inspired paleontologists to name an ancient shark after manga and anime’s Chainsaw Man. RZZZ.
Read MoreDinosaurs Were Weirder Than We Ever Imagined
Not only is Spicomellus the oldest known ankylosaur, but it’s one of the spikiest. Credit: Matthew Dempsey
The extremely-spiky dinosaur Spicomellus is a reminder that the fossil record is full of surprises.
Read MoreFlesh-Ripping Crocs Outlived Carnivorous Dinosaurs
Kostensuchus was a large carnivorous croc, estimated at about 12 feet in length. Art by Gabriel Diaz Yanten.
A gorgeous skeleton found in Argentina reveals a predatory crocodile from the end of the Age of Dinosaurs.
Read MoreThe Curious Case of a Coastal Croc
Benggwigwishingasuchus eremicarminis takes a stroll along a Triassic coastline. Credit: Jorge Gonzalez.
Bones found in Nevada puzzled paleontologists. The remains represent a prehistoric crocodile cousin that walked on two feet and was washed out to sea around 245 million years ago.
Read MoreJust when you thought it was safe to go back in the swamp...
The most complete fossil of Gaiasia jennyae yet found, an early tetrapod found in the 280 million-year-old rocks of Namibia. Credit: C. Mariscano
Fossils of an enormous, salamander-like creature reveal an unexpected evolutionary twist.
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