Kamuysaurus

In 2003, amateur paleontologist Yoshiyuki Horita at the Shirafunezawa Creek discovered the tail of a euornithopod. An entire skeleton was in 2013 and 2014 uncovered by teams of the Hobetsu Museum and the Hokkaido University Museum. The bones were found on a surface of and were partially articulated, though sometimes damaged by erosion. The holotype represents an adult individual of at least nine years of age. It was likely washed into the sea as a carcass. ==Description==

Kamuysaurus was about long. From the width of its thighbone, its weight has been estimated at , dependent on its having been bipedal or quadrupedal respectively. The describing authors indicated some distinguishing traits. Three of these were autapomorphies, unique derived characters. On the quadrate bone, the notch at the opening separating it from the quadratojugal bone, is located at a very low position, at three quarters of the shaft length measured from the top of the element. This is unique for the Hadrosauridae as a whole. The surangular bone of the lower jaw has only a short ascending branch, not reaching the coronoid process. The sixth tot thirteenth back vertebrae have neural spines that are inclined to the front. ==References==