Campananeyen

Campananeyen is a genus of rebbachisaurid sauropod dinosaur from the Late Cretaceous (Cenomanian) Candeleros Formation of Argentina. The genus contains a single species, Campananeyen fragilissimus, known from a fragmentary skeleton.

== Discovery and naming == The Campananeyen holotype specimen, MMch-PV 71, was discovered in sediments of the Candeleros Formation (Barda Atravesada de Las Campanas locality) near Villa El Chocón in Neuquén Province, Argentina. The specimen consists of an incomplete skeleton, including the braincase and the right quadrate from the skull, a partial dorsal, sacral, and caudal vertebra, pieces of the ilia, and two ungual phalanges. The cranial remains were described in a scientific paper published in 2016, but left unnamed.