Neuquén Group
Rocks in the Neuquén Group fall within the Cenomanian to early Campanian stages of the Late Cretaceous Period . 
<triplet> Cenomanian <subj> Late Cretaceous <obj> part of <triplet> Campanian <subj> Late Cretaceous <obj> part of <triplet> Late Cretaceous <subj> Cenomanian <obj> has part <subj> Campanian <obj> has part