Osteology of Deinonychus antirrhopus, an Unusual Theropod from the Lower Cretaceous of Montana
John H. Ostrom, Ostrom238,03 DKK
Stratigraphy and Paleontology of the Cloverly Formation (Lower Cretaceous) of the Bighorn Basin Area, Wyoming and Montana
John H. Ostrom, Ostrom288,10 DKK