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The dinosaurs of North America . GEOLOGICAL SURVEY SIXTEENTH ANNUAL REPORT PART PL XXLV BRONTOSAURUS EXCELSUS Jurassic Pl XXIV Illustration biodiversitylibrary org title Marsh Othniel Charles NameFound Brontosaurus excelsus NameConfirmed Brontosaurus excelsus EOLID NameBankID Biodiversity Heritage Library The dinosaurs