Wikipedia
"Koreanosaurus" (meaning "Korean lizard") is the informal name given to an as-yet undescribed genus of dinosaur from the Late Cretaceous. It was a possible dromaeosaur (or similar theropod) which lived in what is now Korea, although at times it has been referred to the Tyrannosauridae and Hypsilophodontidae. Based solely on a femur, the type species was coined by Kim in 1979, who by 1993 had decided that it was a species of Deinonychus, "D." koreanensis. It is probably the same as "Koreasaurus", another informal name for a possible Korean dromaeosaurid.
In 2010 another, now validly named, dinosaur was given the name Koreanosaurus.
Koreanosaurus (meaning " Korean lizard") is a genus of ornithopod dinosaur. In May 2003 three fossils of Koreanosaurus were found in the Late Cretaceous-age Seonso Conglomerate from the southern coast of the Bi-bong Dinosaur Fossil Findspot, Boseong, Korean Peninsula: the holotype KDRC-BB2, a partial skeleton lacking the skull, and the paratypes KDRC-BB1 and KDRC-BB3. The type species is Koreanosaurus boseongensis, after its discovery locality ( Boseong site 5). The type species was initially named and described in a master's thesis by Lee Dae-Gil in 2008, and was officially published by Min Huh, Dae-Gil Lee, Jung-Kyun Kim, Jong-Deock Lim and Pascal Godefroit in 2011.
Koreanosaurus was considered to be a basal member of the Ornithopoda by the authors, forming a clade with Zephyrosaurus schaffi, Orodromeus makelai and Oryctodromeus cubicularis from which they deduced a burrowing lifestyle. Han et al. found it plausible that Koreanosaurus might be a member of Jeholosauridae or closely related to it.