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Topic: cretaceous
What are mosasaurs?
Travel back to the Cretaceous period, where large marine lizards called mosasaurs dominated ecosystems around the planet. While some were the size of a dolphin, others were longer than a Tyrannosaurus rex. How did the...
The Living Fossil Fish – Animated Life
In 1938, South African museum curator Marjorie Courtenay-Latimer came across a strange blue fin poking out of a pile of fish. With its fleshy, lobed fins and its tough armored scales, the coelacanth did not look like ...
Why does T-Rex have tiny arms?
"Tyrannosaurus rex was big, Tyrannosaurus rex was vicious, and Tyrannosaurus rex had tiny arms." In this PBS Eons episode, Hank Green explains how the Tyrannosaurus rex lost its arms over the course of 90 million year...
The ferocious predatory dinosaurs of Cretaceous Sahara
In Cretaceous times (around 100 million years ago), North Africa was home to a huge river system and a bizarre menagerie of giant prehistoric predators -- including the Spinosaurus, a dinosaur even more fearsome than ...
Dinosaur fossils uncovered on an Antarctic expedition
A team of 12 scientists recently completed an audacious fossil hunting expedition to James Ross Island in Antarctica, and returned with over one ton of marine, avian, and dinosaur fossils that are between 71 million a...
Meet the Titanosaur at AMNH
A mighty Titanosaur, the recently-discovered herbivore that measures 37.186 meters (122 feet) long, now stands on the fourth floor of New York City's American Museum of Natural History. Its discovery is so recent (201...
Why are there oyster shells in the ‘Chalk Pyramids’ of Kansas?
Fossilized oyster shells, coral, fish bones, shark teeth, and other marine organisms can be found in the 'Chalk Pyramids' or Monument Rocks that rise up from the flat plains of western Kansas. These ancient chalky spi...
Paleontology 101 with Dr. Lindsay Zanno
From Untamed Science, a tour with Dr. Lindsay Zanno, Director of the Paleontology & Geology Research Laboratory at the North Carolina Museum of Natural Sciences. The key things she emphasized wer...
