The dinosaur-bird transition is among the most fascinating events in evolutionary history, but several aspects such as changes in reproductive system,...
Paleontologists from the University of Texas at Austin have identified a new species of ancient beaver from the fossilized remains found at several sites...
Edowa zuniensis is the first species of baenid turtle described from the Turonian age of North America.
Life reconstruction of Edowa zuniensis. Image credit:...
Palmichnium gallowayi, a 460-million-year-old fossil trackway of a sea scorpion, from upstate New York, is one of the earliest signs of animal life on...
Miracinonyx trumani is an extinct species of cheetah-like cat that roamed the North American prairies and steppe terrains more than 13,000 years ago.
Miracinonyx...
Scientists have found fragments a human-made projectile point in a rib of an American mastodon (Mammut americanum) from the Manis site, Washington, the...
Hibbertopterus lamsdelli is only the fourth, yet most reliable record of an American hibbertopterid sea scorpion.
Life reconstruction of a hibbertopterid...
Funcusvermis gilmorei lived in the tropical forests of what is now Arizona, the United States, during the Triassic period, approximately 220 million years...
Paleontologists have described a previously unrecognized genus and species of hadrosaurid dinosaur from a partial bone found in Texas, the United States.
Life...
Archaeologists have unearthed an assemblage of 14 stemmed projectile points at the Cooper’s Ferry site, located on a terrace of the lower Salmon River...
The renowned Berlin-Ichthyosaur State Park, part of Humboldt-Toiyabe National Forest in the Shoshone Mountains of west-central Nevada, the United States,...
Paleontologists have long debated why groups such as non-avian dinosaurs became extinct whereas mammals and other lineages survived the end-Cretaceous...
Daspletosaurus wilsoni, a tyrannosaurid dinosaur that lived 76.5 million years ago in what is now Montana, the United States, displays a unique combination...
Paleontologists from the Nevada Science Center, Idaho State University and Montana State University have described a new genus and species of thescelosaurine...
Some species of ornithomimosaurs that lived in what is now Mississippi, the United States, some 85 million years ago were among the world’s largest at...
A new genus and species of saber-toothed mammalian carnivore has been identified from a fossil found in California, the United States.
An artist’s impression...
Unlike most plesiosaurs, Serpentisuchops pfisterae had both a long neck and large, elongated jaws.
Serpentisuchops pfisterae used both its neck and snout...
Opisthiamimus gregori is an extinct, small-bodied relative of the tuatara (Sphenodon punctatus), the only living member of the reptilian order Rhynchocephalia.
An...
The newly-identified species of beaver, Microtheriomys articulaquaticus, represents the oldest semi-aquatic rodent in North America and the oldest amphibious...
A new genus and species of chasmosaurine ceratopsid dinosaur has been identified from a fossilized skull held in U.S. museums for several decades. The...
