Kingdom Animalia Clade Dinosauria Clade †Sauropoda Phylum Chordata Order Saurischia | Class Reptilia Suborder †Sauropodomorpha Clade †Gravisauria Rank Family | |
 | ||
Similar Cetiosauridae, Saurischia, Vulcanodon, Euhelopodidae, Camarasauridae | ||
The Early Jurassic sauropod dinosaurs Zizhongosaurus, Barapasaurus, Tazoudasaurus, and Vulcanodon may form a natural group of basal sauropods called the Vulcanodontidae. Basal vulcanodonts include some of the earliest known examples of sauropods. The family-level name Vulcanodontidae was erected by M.R. Cooper in 1984. In 1995 Hunt et al. published the opinion that the family is synonymous with the Barapasauridae. One of the key morphological features specific to the family is an unusually narrow sacrum.
References
Vulcanodontidae Wikipedia(Text) CC BY-SA