Bonatitan reigi
Source: http://thezt2roundtable.com/topic/11230552/1/
Name: Bonatitan reigi
Name Meaning: Bonaparte’s Titan
First Described: 2004
Described By: Martinelli & Forasiepi
Classification: Dinosauria, Saurischia, Eusaurischia, Sauropodomorpha, Plateosauria, Massopoda, Sauropodiformes, Anchisauria, Sauropoda, Gravisauria, Eusauropoda, Neosauropoda, Macronaria, Titanosauriformes, Somphospondyli, Titanosauria, Lithostrotia, Saltasauridae
Bonatitan is a titanosaur known from the Allen Formation of Rio Negro Province, Argentina. It lived from the Campanian to Maastrichtian ages of the Late Cretaceous, sometime around 70 million years ago. It is known from a brain case and partial other skeletal remains from two individuals, and it lived alongside many other dinosaurs such as Saltasaurus, Laplatasaurus, Aeolosaurus, Rocasaurus, Lapampasaurus, Willinakage, Austroraptor, and the pterosaur Aerotitan.
Sources:
http://www.prehistoric-wildlife.com/species/b/bonatitan.html
https://en.wikipedia.org/wiki/Bonatitan
Shout out goes to @ectozoology!