Xixianykus
In Depth At the time of its description the genus Xixianykus represents the oldest known parvicursorine alvarezsaur discovered (others are dated to the Campanian/Maastrichtian eras). The legs of Xixianykus are of particular interest since they are about twenty centimetres long, which in relation to a total body length estimated at fifty centimetres long, means that … Read more