Invalid subtaxa: Hecatasaurus Brown 1910, Hecatosaurus Brown 1910, Limnosaurus Nopcsa 1900 [replaced name]
Full reference: B. F. Nopcsa. 1903. Telmatosaurus, new name for the dinosaur Limnosaurus. Geological Magazine, decade 4 10:94-95
Parent taxon: Hadrosauroidea according to A. A. Ramírez-Velasco et al. 2012
Sister taxa: Bactrosaurus, Batyrosaurus, Bolong, Cedrorestes, Claosaurus, Eolambia, Equijubus, Fukuisaurus, Gilmoreosaurus, Glishades, Hadrosauridae, Huehuecanauhtlus, Jeyawati, Jintasaurus, Jinzhousaurus, Levnesovia, Mantellisaurus, Nanyangosaurus, Penelopognathus, Probactrosaurus, Protohadros, Saurolophidae, Shuangmiaosaurus, Spheroolithidae, Tanius, Tethyshadros, Xuwulong
Subtaxa: Telmatosaurus transsylvanicus
Ecology: ground dwelling herbivore