👉 The term "hypsiprymnodontinae" is not recognized in the scientific literature. Hypsiprymnodon, a genus of dinosaurs, was named after its discovery in 1856 by British paleontologist James Hutton, who described it as a group of small theropod dinosaurs that lived during the Late Cretaceous period about 79 million years ago. However, there is no scientific evidence or consensus on whether this group includes all known hypsiprymn