The four-foot-long creature possessed grazer's teeth, a tank-like body and a short stubby tail. Most likely, they lived lives more like an armadillos than a conventional crocodiles. Dubbed Simosuchus clarki, the species was first unearthed in 2000, and now appears fully described in a supplement to the Journal of Vertebrate Paleontology.
"No other crocodile looks as bizarre as this one," says paleontologist David Krause of Stony Brook (N.Y.) University, part of the team that discovered the species. "Crocodiles evolved into a wide variety of body plans in the Age of Dinosaurs, but this one really looks unusual."