An international research team examines a rich fossil bed in the renowned Berlin-Ichthyosaur State Park in Nevada’s Humboldt-Toiyabe National Forest, where many 50-foot-long ichthyosaurs (Shonisaurus popularis) lay petrified in stone. The study offers a plausible explanation as to how at least 37 of these marine reptiles came to meet their ends in the same locality — a question that has vexed paleontologists for more than half a century. The research presents evidence that these ichthyosaurs died at the site in large numbers because they were migrating to this area to give birth for many generations across hundreds of thousands of years.
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Source: ScienceDaily