Direct fossil evidence shows that spinosaurids fed on fish as well as a variety of other small to medium-sized animals, including dinosaurs. "Baryonyx" was found with scales of the prehistoric fish "Scheenstia" in its body cavity, and these were abraded, hypothetically by gastric juices. Bones of a young "Iguanodon", also abraded, were found alongside this specimen. If these represent "Baryonyx"’s meal, the animal was, whether in this case a hunter, or a scavenger, an eater of more diverse fare than fish. Moreover, there is a documented example of a spinosaurid having eaten a pterosaur, as one "Irritator" tooth was found lodged within the fossil vertebrae of an ornithocheirid pterosaur found in the Romualdo Formation of Brazil. This may represent a predation or a scavenging event. A fossil snout referred to "Spinosaurus" was discovered with a vertebra from the sclerorhynchid "Onchopristis" embedded in it. In the Sao Khua Formation of Thailand, isolated tooth crowns from "Siamosaurus" have been found in association with sauropod remains, indicating possible predation or scavenging.