British museum fossils, misidentified for over a century, are now known to be ancient coelacanth fish. This discovery dramatically increases the number of known specimens from the British Triassic ...

Though the dinosaurs were all killed by a meteor, not all were created equal in life. This species in particular was adept at ...

Learn about the time period that took place 251 to 199 million years ago. 3 min read The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of ...

WASHINGTON (Reuters) – The tusks of a stoutly built plant-eating mammal relative that inhabited Antarctica 250 million years ago are providing the oldest-known evidence that animals resorted to ...

Changes in inner ear canal morphology over time suggest that mammalian ancestors called mammaliamorphs evolved warm-bloodedness around 233 million years ago during the late Triassic period, according ...

Many mammals and birds are remarkable athletes; mice work hard to dig burrows for protection and sparrows fight gravity with each flap of their wings. In order to have the energy to sustain vigorous ...

5 mass extinctions wiped out 65–96% of species on Earth, with major events including the Ordovician, Devonian, Permian, ...

Researchers have uncovered dozens of long-misidentified coelacanth fossils in British museums, some overlooked for more than ...

Humans are diurnal--we are active in the day and sleep at night. But diurnalism is by far the exception rather the rule in mammals. About 250-230 million years ago, the mammalian ancestors, called the ...

The Quebrada de Santo Domingo in Argentina is a harsh environment. Situated high in the Andes, the area is nearly ...