Protognathosaurus
| Protognathosaurus Temporal range: Middle Jurassic, | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | †Sauropodomorpha |
| Clade: | †Sauropoda |
| Genus: | †Protognathosaurus Olshevsky, 1991 |
| Species: | †P. oxyodon |
| Binomial name | |
| †Protognathosaurus oxyodon Zhang, 1988 | |
| Synonyms | |
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Protognathosaurus (meaning "early jaw lizard") is a genus of herbivorous sauropod dinosaur from the Middle Jurassic Lower Shaximiao Formation in Sichuan, present-day China.