Koreaceratops, meaning “Korean horned face” is a basal ceratopsian dinosaur found in Lower Cretaceous rocks in South Korea, dating to the Albian age. An analysis of Koreaceratops' bone histology, conducted in 2022, indicates that the type specimen was about eight years old at the time of its demise and had not yet reached physical or sexual maturity. This study also proposes that Koreaceratops inhabited a semiarid environment and that the poor preservation of its distinguishing features can be attributed to microbial erosion.

Thomas Holtz estimated the length of this specimen to be approximately 1.3 meters (4.3 feet). In 2011, Koreaceratops garnered attention for two notable reasons. Firstly, it marked the first discovery of a ceratopsian dinosaur in South Korea. Secondly, there was a theory that Koreaceratops might have been semi-aquatic. This hypothesis was based on the observation of tall neural spines in the tail vertebrae, which were more than five times taller than the centra, the round part of the vertebra that encloses the spinal cord. This structure could have supported a laterally compressed tail, which is often seen in animals that use their tails for swimming.

While the notion of Koreaceratops spending time in the water is intriguing and plausible, further research on ceratopsians may yield a more widely accepted explanation. Many basal ceratopsians possessed deep tails, albeit not to the same extent as Koreaceratops, and certain fossil remains have even revealed quill-like structures that would have extended from the tail, creating the illusion of a larger tail than it actually had.