John Ostrom
Videos
John Harold Ostrom was an American paleontologist who revolutionized the modern understanding of dinosaurs. Ostrom's work inspired what his pupil Robert T. Bakker has termed a "dinosaur renaissance".
John Ostrom and Deinonychus skeleton cast. Photo courtesy Yale University.
Deinonychus FMNH White Background
Skeleton of the hadrosaur Anatosaurus (now E. annectens) paratype YPM 2182 at the Yale University Museum showing its upright posture.
Ostromia crassipes, previously known as the Haarlem Archaeopteryx
Utahraptor
Videos
Utahraptor is a genus of large dromaeosaurid dinosaur that lived during the Early Cretaceous period from around 139 to 135 million years ago in what is now the United States. The genus was described i
John Ostrom
…Also in 1970, he named Tenontosaurus tilletti (meaning "tendon lizard"). In 1993, James Kirkland, Robert Gaston, and Donald Burge named a fossil Utahraptor ostrommaysi for John Ostrom and Chris Mays. The largest discovered example of this species is 23 feet long and had an estimated live weight over 1000 pounds. In…
BYU Utahraptor skeletal mount
Premaxilla of BYU 7510 14585
Pedal ungual II of CEUM 184v.294, housed at the Prehistoric Museum, USU Eastern.
Reconstructed hindlimb of Utahraptor