Happy #FossilFriday! Meet the phytosaur Machaeroprosopus gregorii, or “knife-face.”
Some phytosaurs reached gigantic size, and this specimen was probably over 40 feet long! Phytosaurs were clearly carnivorous: in a few specimens, bones of other reptiles have been found as stomach contents. Machaeroprosopus lived 210 million years ago, and was collected near Cameron, Arizona in 1936.
This specimen is located in the Hall of Vertebrate Origins.