Genus: Gualicho APESTEGUIA, SMITH, VALLERI, & MAKOVICKY, 2016
Etymology: Gualicho, a Spanish name derived from the Gennaken (Günün-a-künnan or northern Tehuelche language) watsiltsüm, for a goddess who was considered the owner of animals and later, following the introduction of Christianty, reinterpreted as a demonic entity. She is now considered a source of misfortune by rural settlers (Gauchos) of the Southern Cone. The name was chosen to reflect the difficult circumstances surrounding the discovery and study of the specimen, and its contentious history following excavation.

Species: shinyae SERENO, WILSON, LARSSON, DUTHEIL & SUES, 1994
Etymology: In honor of Ms. Akiko Shinya, Chief Fossil Preparato at the Fidle Museum, for her many conrtibutions to paleontology including discovery of the holotype of Gualicho on February 13th, 2007.

Holotype: MPCN PV 0001

Locality: Along the northern flank of the Meseta de la Renteria, Rio Negro Province, Argentina.

Note: Exact locality data is available on request from qualified researchers.

Horizon: Huincul Formation.

Biostratigraphy:

Age: Cenomanian to Turonian Stage, Upper Gallic Subepoch, Lower Gulf Epoch, Middle-Early Late Cretaceous.

Material: Comprising four articulated centra from the dorsal vertebral column, an articulated gastral basket, a section of the  tail distal to the transition point, the left scapulocoracoid and forelimb, the distal end of both pubes including the pubic bootk adn parts of both hind limbs.