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Field Museum researcher Matteo Fabbri said the cast is about 60% of a skeleton, the most complete specimen of the species.

Scientists have long struggled to interpret Spinosaurus fossils to determine the animal’s behavior in life, uncertain whether it swam while hunting or simply waded into water in search of prey. It will be available for visitors starting Saturday. CHICAGO (AP) - The newest addition to the Field Museum on Chicago’s lakefront will give visitors a glimpse of the largest predatory dinosaur yet discovered via a 46-foot (14.02 meter) cast of a Spinosaurus skeleton suspended high above the museum’s main hall.įield Museum officials unveiled the cast with its distinctive fin and crocodile-like jaws on Friday.