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Apatosaurus and Brontosaurus have a long naming history. Comparing many skeletons helped researchers argue that the two should...
Argentinosaurus is known from an incomplete skeleton. Its enormous bones reveal a huge plant eater, while its exact...
Stegosaurus carried two very different kinds of bone on its body. Its back plates and tail spikes probably...
Ankylosaurus carried bony armour and a heavy tail club. Its skeleton shows how protection could become part of...
The dome of Pachycephalosaurus was made of thick bone. Injuries on fossil skulls provide evidence for combat, but...
Early reconstructions gave Iguanodon a nose horn. More complete fossils showed that the pointed bone belonged on its...
Styracosaurus had a large nose horn and long spikes around its frill. Its elaborate head was part of...
A Velociraptor arm bone preserves attachment points for feathers. These tiny marks give direct evidence that the dinosaur...
Quetzalcoatlus had wings on the scale of a small aircraft. Fossils help researchers test how such a large...