Crocodiles can have extra growth cycles in a year: Why this matters for estimating the age of dinosaurs

In biology and paleontology (the study of extinct organisms) there are a few ways to estimate the age of an animal's skeleton ...
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An asteroid ended the age of the dinosaurs. But how did their reign begin? Mysterious early reptiles may hold the answer

This piece first appeared in the Front Matter section of the Proceedings of the National Academy of Sciences. A small but fierce jawbone sits in Argentina’s natural science museum in Buenos Aires. Six ...

Paleontologists challenge use of bone growth rings to age crocodiles, dinosaurs

Do the bones of all Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted ...
Smithsonian Magazine

An Asteroid Ended the Age of the Dinosaurs. But How Did Their Reign Begin? Mysterious Early Reptiles May Hold the Answer

Researchers are uncovering the evolutionary steps that set the stage for dinosaurs to rule the planet Amy McDermott, PNAS Front Matter Paleontologists have found early examples of theropods, the group ...