Fossil dinosaur tracks are also known and include theropod and ankylosaur. Her later finds included bones from a hypsilophodont, a pterosaur, an ankylosaur, mosasaurs and plesiosaurs. Many fossil ankylosaur trackways have also been recognized. This was the first discovery of an ankylosaur in the Lower Cretaceous of Mongolia. Possible neonate-sized ankylosaur fossils have been documented in the scientific literature. As an ankylosaur, it was almost certainly an herbivore. In 2017, a newly discovered ankylosaur fossil was named "Zuul crurivastator" after Gozer's minion. It is the most completely known ankylosaur from the Cretaceous of Europe. This was due to Zuul's head resembling that of an ankylosaur. It was dubbed the "Carlsbad Ankylosaur". Its quadrate bone is shorter and mediolaterally wider than in any other ankylosaur. "Hylaeosaurus" was the first ankylosaur discovered. It was a nodosaurid, an ankylosaur without a clubbed tail. The best specimen is a partial skeleton of a nodosaurid ankylosaur called "Silvisaurus condrayi". The metacarpus is short, in 1977 it was the shortest of any Asian ankylosaur known.