Aetonyx

Aetonyx Temporal range: Early Jurassic, Hettangian–Sinemurian 201.4–192.9 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type specimens of Aetonyx palustris (19–23), Massospondylus harriesi (18), and Geranosaurus (24)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	Eusaurischia
Clade:	†Sauropodomorpha
Genus:	†Aetonyx Broom, 1911[1]
Species
†A. palustris Broom, 1911[1]

Aetonyx is a dubious genus of sauropodomorph dinosaur from the Early Jurassic of southern Africa. Its only species is A. palustris, which was named by Robert Broom in 1911 based on a fragmentary skeleton from the upper Elliot Formation found near Fouriesburg, Free State Province. Broom considered it as a species of "carnivorous dinosaur". In 1924, Sydney H. Haughton assigned a second specimen to Aetonyx, which is also from Fouriesburg. In 1932, Friedrich von Huene suggested that the species Thecodontosaurus dubius, which Haughton had named in his 1924 paper, is a synonym of Aetonyx palustris. The species was later synonymised with Massospondylus harriesi and Massospondylus carinatus. A 2004 review lists it as an indeterminate sauropodomorph.