Amargasaurus was one of the strangest of sauropod dinosaurs because it had pairs of 60-centimetre-long spikes sticking out of its neck bones – and now we know that they once supported two neck sails.
Zoonar/Michael Rosskothen/Zoonar GmbH/Alamy
Sauropod dinosaurs gravitated towards a shared body shape: a massive, barrel-like torso with a long, tapered tail and neck extending from either end. But new research indicates that at least some sauropod species also sported tall sails along the back of their necks. Fossil remains of several so-called “dicraeosaurid” sauropods described over the past century revealed that these animals had strange neck vertebrae, equipped with long, two-pronged spines that extended upwards. It has been suggested that the puzzling structures acted as supports for a thick hump of tissue, a …App + Web
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