The creation of the MEB was triggered by the finding of Giganotosaurus Carolinii,[4][5] one of the world's largest carnivorous dinosaurs, found in July 1993 by Rubén Darío Carolini[6]18 kilometres (11 mi) to the southwest of Villa El Chocón.

The museum of Villa El Chocón was created as a consequence of paleontological findings of great scientific importance in the Exequiel Ramos Mexía Dam.

In addition, other species of dinosaurs and vertebrates have been found and/or studied, such as Neuquensaurus australis, Amargasaurus cazaui, Bajadasaurus pronuspinax,[7] the remains of an unspecified member of the Titanosauria, Skorpiovenator bustingorryi,[8] the remains of Choconsaurus baileywillisi[9] (caudal and dorsal vertebrae, and the original metacarpal bones and maxillae), Prochelidella sp., Kaikafilusaurus calvoi and Avitabatrachus uliana, among others.

Apart from the species Carnotaurus, there are original caudal and dorsal vertebrae, metarcapus and maxilla of the sauropod Choconsaurus baileywillisi, whose specific name comes from the locality where it was found.

In this sector, there is an official repository (named with the acronym MMCh–P: Municipal Museum of El Chocón–paleontology) where holotypes are kept, such as Skorpiovenator bustingorryi, Bajadasaurus pronuspinax, Choconsaurus baileywillisi, Leinkupal laticauda and Giganotosaurus carolinii.