New hadrosaurid remains from the Late Cretaceous of Río Negro Province (Argentina, Late Cretaceous)

CRUZADO CABALLERO, P.

JOURNAL OF IBERIAN GEOLOGY

SERVICIO PUBLICACIONES

Lugar: Madrid; Año: 2017 vol. 43 p. 307 - 318

1698-6180

Purpose Although the hadrosaurid record is more abundantin theNorthernHemisphere than in the SouthernHemisphere,it is in Argentina that most remains have been discovered,specifically in Patagonia. This record is characterized by anextensive geographical distribution of sites, some of themwith abundant remains, many of which have been assigned toa high taxonomic level as indeterminate hadrosauroids orhadrosaurids. Despite the abundance of indeterminateremains, three hadrosaurid species are recorded between Rı´oNegro, La Pampa and Chubut provinces.Method Here, new cranial and postcranial remains fromindeterminate hadrosauroids, hadrosaurids andeuhadrosaurians deposited in several museums Rı´o NegroProvince are presented and described here.Results and Conclusions These new remains increase thedistribution and abundance of these dinosaurs in Argentinaand highlight the need for an in-depth revision of the historyand evolution of this ornithopod clade in South America.