Named By: X. C. Wu & D. B. Brinkman - 1993.
Classification: Chordata, Reptilia, Crocodylomorpha, Eusuchia?
Species: G. palatinus (type).
Size: Uncertain, but skull is estimated to have been around 15 centimetres long when complete.
Known locations: Canada, Alberta - Milk River Formation.
Time period: Santonian of the Cretaceous.
Fossil representation: Partial remains of the posterior (rear) portion of the skull and a cervical (neck) vertebra.
late Cretaceous, Gilchristosuchus was a crocodile
evolutionary terms may have come close to modern crocodiles, yet
may not have actually been one of them. The size of Gilchristosuchus
is still unknown but the one partial skull known shows signs of
fusing, indicating that it was an adult specimen. With the skull
estimated at fifteen centimetres, Gilchristosuchus
would have only
have been a very small croc. Although so far only a single vertebra
and partial skull have been assigned to Gilchristosuchus,
fossils assigned to the genera Brachychampsa and Leidyosuchus
believed to possibly belong to Gilchristosuchus.
The holotype specimen of Gilchristosuchus was discovered in the Milk River Formation of Alberta, Canada. With this in mind, Gilchristosuchus would have likely shared its habitat with dinosaurs such as early pachycephalosaurs like Acrotholus, as well as small predatory dinosaurs like Saurornitholestes and Richardoestesia, which may have actually been a threat to little crocs like Gilchristosuchus.
- A new crocodylomorph of "mesosuchian" grade from the Upper Cretaceous upper Milk River Formation, southern Alberta, X. C. Wu & D. B. Brinkman - 1993.