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ST. LOUIS – Scientists in Missouri have uncovered the bones of a juvenile dinosaur they’d never seen before.

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Paleontologist Guy Darrough discovered the juvenile Parrosaurus Missouriensis, KTVI reported. The location of the finding is being kept secret.

Parrosaurus Missouriensis was a duck-billed sauropod, estimated to have approximately 1,000 small teeth and stretched to be about 30-35 feet tall, according to the Bollinger County Museum.

Remains of the duckbilled dinosaur have not been found anywhere else in the United States. The original owners of the property found dinosaur bones in the 1940s and sent them to the Smithsonian Museum in Washington, D.C.

Parrosaurus missouriensis Gilmore & Stewart, 1945

Bones held at the Smithsonian Museum.