Confractosuchus

Confractosuchus is a genus of crocodyliform that lived in what is now Australia.

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Confractosuchus sauroktonos lived in what is now Queensland, Australia, some 95 million years ago (Cenomanian stage of the Late Cretaceous epoch). It belonged to Eusuchia (literally, true crocodiles), a clade that includes living crocodilians and their closest relatives. The animal’s fossilized remains — a near-complete skull with dentition and postcranial skeleton missing the tail and hind limbs — were discovered on Elderslie Station, near the north western margins of the Winton Formation, in 2010.

“Confractosuchus sauroktonos represents only the second crocodyliform discovered from the Winton Formation,” said Dr. Matt White, a paleontologist with the Australian Age of Dinosaurs Museum of Natural History and the Palaeoscience Research Centre at the University of New England, and his colleagues.

The researchers also found the partly digested remains of a juvenile ornithopod dinosaur in the crocodile’s stomach: “Collectively, the ornithopod remains comprise three dorsal vertebrae, two sacral centra, three distal caudal centra, both proximal femora, left tibia, and several other elements; all presumably from a single individual,” they said. “These gut contents oddly represent the first recorded skeletal remains of ornithopods from the Winton Formation and may represent a new species.”

The dinosaur’s estimated body mass (1.0-1.7 kg) falls well within the size range for expected prey of Confractosuchus sauroktonos, which has an estimated body length of 2.5 m (8.2 feet) based on the preserved elements. Yet, despite its last meal, the crocodile was likely not a dinosaur specialist.

Confractosuchus

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