Full reference: R. Stanford, R. E. Weems, and M. G. Lockley. 2004. A new dinosaur ichnotaxon from the Lower Cretaceous Patuxent Formation of Maryland and Virginia. Ichnos 11:251-259
Parent taxon: Ornithopoda according to M. G. Lockley et al. 2009
Sister taxa: Anabisetia, Anomoepodidae, Bonaparteichnium, Brachypoda, Camptosaurichnus, Caririchnium, Dakotasaurus, Dinehichnus, Dinosauropodes, Dolichopoda, Euornithopoda, Fabrosauria, Gasparinisaura, Gideonmantellia, Hypsilophodon, Hypsilophodontia, Iguanodontia, Jeholosauridae, Jiayinosauropus, Kalodontoidea, Koreanosaurus, Laoyingshanpus, Leaellynasaura, Moyenisauropodidae, Nanosauridae, Ornithopodichnites, Ovaloolithidae, Qantassaurus, Staurichnium, Talenkauen, Tetrapodosauridae, Thescelosauridae, Trachodontoidea, Trinisaura, Unespichnium, Wintonopus, Yueosaurus
Subtaxa: Hypsiloichnus marylandicus
Type: Hypsiloichnus marylandicus
Ecology: ground dwelling herbivore