Named By: Sebastian Apestegula - 2007.
Classification: Chordata, Reptilia, Saurischia, Sauropodomorph, Sauropoda, Titanosauria.
Species: A. macni (type).
Known locations: Argentina. Neuquen Province - La Amarga Formation.
Time period: Barremian of the Cretaceous.
Fossil representation: 6 caudal (tail) vertebrae, shoulder blade, femur and an astralgus (talos/ankle bone).
An early Cretaceous titanosaur from South America, the precise size of Amargatitanis is hard to establish due to lack of remains. The name Amargatitanis is a reference to its discovery in the La Amarga Formation, and its titanosaurian lineage. Other sauropods known from the La Amarga Formation include Zapalasaurus and the similarly named Amargasaurus, though as diplodocids they would not have been closely related to Amargatitanis. The abelisauroid theropod Ligabueino is also known from this formation.
- The sauropod diversity of the La Amarga Formation (Barremian), Neuquén (Argentina), Sebastian Apestegula - 2007.