In Depth
The first genus of theropod dinosaur to ever be named from India’s Lameta Formation, Orthogoniosaurus has often been considered to be a senior synonym for other theropod genera that were later discovered. However the holotype of Orthogoniosaurus is only a tooth, and because of this no other fossil remains have been attributed to the genus because it is almost impossible to identify them based upon such scant fossil material.
Other theropods from the Lameta Formation which are known from much more complete remains include Indosaurus, Indosuchus, Rajasaurus and Rahiolisaurus amongst others. Interestingly, all four of these genera are abelisaurid theropods, though the tooth of Orthogoniosaurus has been regarded as possibly coming from a ceratosaurian theropod, though again, because only a tooth is known this is not seen as a certainty, just a possibility.
Further Reading
- On a new theropod dinosaur (Orthogoniosaurus matleyi, n. gen. et n. sp.) from the Lameta beds of Jubbulpore, H. C. Das-Gupta - 1931.
