Istiorachis
| Istiorachis Temporal range: Early Cretaceous,
| |
|---|---|
| Reconstructed skeleton with a human for scale | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Ornithopoda |
| Clade: | †Ankylopollexia |
| Clade: | †Styracosterna |
| Genus: | †Istiorachis Lockwood, Martill & Maidment, 2025 |
| Species: | †I. macarthurae
|
| Binomial name | |
| †Istiorachis macarthurae Lockwood, Martill & Maidment, 2025
| |
Istiorachis (meaning "sail spine") is an extinct genus of iguanodontian ornithopod dinosaur from the Early Cretaceous (Barremian age) Wessex Formation of the Isle of Wight, England. The genus contains a single species, Istiorachis macarthurae, known from a partial postcranial skeleton including several vertebrae, incomplete ribs, and part of the pelvis. Its vertebral neural spines are notably elongated, giving the animal a 'sail-backed' appearance.