found some teeth of carnivorous phytosaurians that they named Palaeosaurus cylindrodon and P. platyodon. In the late nineteenth century, the theory became popular that such remains belonged to carnivorous prosauropods: animals with the body of Thecodontosaurus, but with slicing teeth. In 1890, Arthur Smith Woodward accordingly named a Thecodontosaurus platyodon, and in 1908 Friedrich von Huene named a Thecodontosaurus cylindrodon. Though still defended by Michael Cooper in 1981, the hypothesis that such creatures existed has now been totally discredited. On one occasion, material of Thecodontosaurus was, by mistake, described as a separate genus. In 1891, Harry Govier Seeley named Agrosaurus macgillivrayi, assuming the remains had been collected in 1844 by the crew of HMS Fly on the northeast coast of Australia. It was long considered the first dinosaur found in Australia, but in 1999 it was discovered that the bones probably belonged to a lot sent by Riley and Stutchbury to the British Museum of Natural History and then mislabelled. In 1906, von Huene had already noted the close resemblance and renamed the species Thecodontosaurus macgillivrayi. It is thus a junior synonym of Thecodontosaurus antiquus. Presently, the only valid species is thus T. antiquus. Misassigned species Thecodontosaurus latespinatus von Huene, 1907-08 = Tanystropheus Thecodontosaurus primus von Huene, 1907-1908 = indeterminate archosauromorph, previously and questionably referred to Protanystropheus Thecodontosaurus elizae Sauvage, 1907 Thecodontosaurus gibbidens Cope, 1878 = Galtonia Thecodontosaurus skirtopodus (Seeley, 1894) = Hortalotarsus Thecodontosaurus polyzelus (Hitchcock, 1865) von Huene, 1906 Thecodontosaurus hermannianus von Huene, 1908 Thecodontosaurus diagnosticus Fraas, 1912 = Efraasia Thecodontosaurus minor Haughton, 1918 Thecodontosaurus dubius Haughton, 1924 Thecodontosaurus browni (Seeley, 1895) von Huene, 1932 Thecodontosaurus alophos Haughton, 1932 = Nyasasaurus Thecodontosaurus caducus was named by Adam Yates in 2003 for a juvenile specimen found in Wales; in 2007 this was made the separate genus Pantydraco. However, Ballell, Rayfield & Benton (2020) considered Pantydraco caducus to be a taxon of uncertain validity, and considered it possible that it might represent a juvenile of Thecodontosaurus antiquus. Description From the fragmentary remains of Thecodontosaurus, most of the skeleton can be reconstructed, except for the front of the skull. Thecodontosaurus had a rather short neck supporting a fairly large skull with large eyes. Its jaws contained many small- to medium-sized, serrated, leaf-shaped teeth. This dinosaur's hands and feet each had five digits, and the hands were long and rather narrow, with an extended claw on each. This dinosaur's front limbs were much