The rocks of the Neuquén Group of southern Argentina preserve a record of organisms and their environment from roughly 80 to 100 million years ago. They include the famous theropods Giganotosaurus, Megaraptor, and Abelisaurus; sauropods Andesaurus and Argentinosaurus; ornithopods Anabisetia and Gasparinisaura; and the early snake Najash.
In 2007, a team led by Argentine paleontologist Sebastián Apesteguía discovered the partial skeleton of a new theropod from a portion of the Neuquén Group known as the Huincul Formation dated to about 95 million years ago. Apesteguía’s team had jacketed the remains, but could not collect them due to a broken down truck. In the meantime the skeleton was collected by another museum without the discovery team’s knowledge or consent and prematurely given the name “Nototyrannus” in the popular press.
Eventually the skeleton was returned to Apesteguía’s research team, and a formal description was recently published. The new theropod has been named Gualicho shinyae. The generic name refers to a Mapuche demon or jinx, so named because of the ordeal that occurred when the specimen was collected. The specific name honors Field Museum fossil preparator Akiko Shinya who discovered the specimen in 2007.