Happy Fossil Friday! This photo is a blast from the past. Snapped circa 1959, it features a visitor admiring the iconic Stegosaurus. With its plated back, spiked tail, and tiny head, it’s one of the Museum’s most recognizable dinosaurs. This large herbivore, which lived during the Jurassic some 140 million years ago, could reach lengths of more than 28 feet (8.5 meters). At one time, some scientists thought this dinosaur had a second brain because the one in its head seemed too small for such a massive animal. Stegosaurus did, however, manage with one small brain.

Photo: Image no. ptc-876 © AMNH Library
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