Study Reveals Baby Sauropods Were Primary Prey for Late Jurassic Predators
Research indicates that juvenile sauropods were a major food source for carnivorous dinosaurs during the Late Jurassic period.
Recent research led by University College London (UCL) has uncovered that juvenile sauropods, the long-necked herbivorous dinosaurs, were a primary food source for carnivorous dinosaurs during the Late Jurassic period. The study, published in the New Mexico Museum of Natural History and Science Bulletin, analyzed fossils from the Morrison Formation in the United States, dating back approximately 150 million years.
The research team reconstructed the ancient ecosystem by mapping a detailed food web, revealing that predators such as Allosaurus and Torvosaurus heavily relied on young sauropods for sustenance. Lead author Dr. Cassius Morrison from UCL Earth Sciences noted that adult sauropods like Diplodocus and Brachiosaurus, which could grow longer than a blue whale, laid eggs about a foot wide. Due to their massive size, these adults likely avoided close contact with their nests to prevent accidentally crushing their offspring. Consequently, the hatchlings were left to fend for themselves, similar to modern sea turtles, making them vulnerable to predation.
The study also suggests that the abundance of defenseless juvenile sauropods may have influenced the evolutionary trajectory of later predators. Approximately 70 million years after the Late Jurassic, the scarcity of such easy prey could have driven the development of specialized hunting adaptations in predators like Tyrannosaurus rex, including enhanced bite force and improved vision, to tackle more formidable prey.