Eduardo Olivero and Roberto Scasso in 1986. The dinosaur was recovered from the Campanian stage of the Upper Cretaceous Santa Marta Formation, about 2 km south of Santa Marta Cove on the north part of the island. The ankylosaur was not formally named until 2006.

In December 2003, U.S. paleontologist Judd Case from Saint Mary's College of California