Osteology of deinonychus antirrhopus, an unusual theropod from the lower cretaceous of Montana - Ostrom, John H. (Peabody Museum of Natural History, Yale University, 2019)
"Osteology of Deinonychus antirrhopus, an Unusual Theropod from the Lower Cretaceous of Montana" was first published in July 1969 by the Peabody Museum of Natural History as Bulletin of the Peabody Museum of Natural History Volume 30.
"A New Theropod Dinosaur from the Lower Cretaceous of Montana" was first published in February 1969 by the Peabody Museum of Natural History as Postilla Number 128.