Syngonosaurus
| Syngonosaurus Temporal range: late Albian ~ | |
|---|---|
| Vertebra of S. macrocercus as seen from two different angles | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Ornithopoda |
| Clade: | †Iguanodontia |
| Genus: | †Syngonosaurus Seeley, 1879 |
| Species: | †S. macrocercus |
| Binomial name | |
| †Syngonosaurus macrocercus Seeley, 1879 | |
| Synonyms | |
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Syngonosaurus is an extinct genus of ornithopod dinosaur from the Early Cretaceous. It was an iguanodontian discovered in the Cambridge Greensand of England and was first described in 1879. The type species, S. macrocercus, was described by British paleontologist Harry Seeley in 1879 and it was later synonymised with Acanthopholis, but the genus was reinstated in a 2020 study, when Syngonosaurus and Eucercosaurus were reinterpreted as basal iguanodontians.