A team of researchers recently reconstructed the basic brain structure of two spinosaur specimens based off the shape and size of their braincases. dinosaurs
specimen from the Isle of Wight. Building off of these scans, the team then recreated the tissues of their brains, including the tissues which were involved in balancing the spinosaurs’ bodies and sorting through their sensory inputs, including sights, smells and sounds.
Though these abilities are typically seen as the trick to the spinosaurs’ semi-aquatic subsistence, the team’s recreations revealed that the spinosaurs’ brains were not any more attuned to their senses than those of the traditional, land-loving theropod. “Because the skulls of all spinosaurs are so specialized for fish-catching, it’s surprising to see such ‘non-specialized’ brains,” Naish adds according to the same press release. “But the results are still significant.”Ultimately, the team says that the terrestrial ancestors of these semi-aquatic therapods could’ve picked up the proper sensory adaptations for catching and consuming fish well in advance of the appearance of the first spinosaur.
“This new research is just the latest in what amounts to a revolution in paleontology due to advances in CT-based imaging of fossils,” says Lawrence Witmer, another study author and professor of paleontology at Ohio University, in the release. “We’re now in a position to be able to assess the cognitive and sensory capabilities of extinct animals and explore how the brain evolved in behaviorally extreme dinosaurs like spinosaurs.
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