Tuan anh

Joined September 2024

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How the T-Rex Lost Its Arms
The Mystery of Tyrannosaurus Rex’s Tiny Arms: Evolutionary Insights and Hypotheses When you ask any six-year-old about dinosaurs, one of the first they’ll likely mention is the Tyrannosaurus rex. Known for being massive and ferocious, T. rex is easily one of the most iconic creatures to have ever roamed the Earth. This giant predator dominated the western regions of what is now the United States during the Cretaceous period, between 68 to 66 million years ago. Standing at an impressive height of 4.5 to 6 meters and weighing up to 10,000 kilograms, T. rex was one of the largest land-dwelling carnivores of its time.
By Tuan anhabout a year ago in Earth
Was This Dinosaur a Cannibal?
In 1947, paleontologist Edwin Colbert made a fascinating and grim discovery at a site in northern New Mexico known as **Ghost Ranch**. While exploring the high desert landscape, he and his team unearthed the remains of hundreds of meat-eating dinosaurs, all found in the same spot. Over the next five years, Colbert and his colleagues extracted 13 massive blocks of rock, each teeming with dinosaur skeletons. Interestingly, most of these fossils belonged to a single species, **Coelophysis**, a small, three-meter-long carnivorous dinosaur that lived during the late Triassic period, around 205 million years ago. Since that initial discovery, more than a thousand Coelophysis specimens have been uncovered at Ghost Ranch.
By Tuan anhabout a year ago in Earth
Why Megalodon Went Extinct
About 8 million years ago, a small baleen whale swam through the warm coastal waters of Peru, unaware of the danger lurking beneath. This whale, known as Piscobalaena, was about 3 to 4 meters long, similar in size to a modern beluga whale. While it filtered mouthfuls of plankton-rich water, a much larger predator approached from below. This predator, similar to how great white sharks hunt today, likely attacked from behind or beneath to maintain the element of surprise. Piscobalaena, lacking the ability to use echolocation, never saw it coming. The predator was Megalodon, the largest shark to have ever lived. We know this because a tooth was found embedded in Piscobalaena's fossilized remains, offering a direct clue about the hunter that ended the little whale’s life.
By Tuan anhabout a year ago in History