Aerosteon are dinosaurs confirmed to appear in Additional Creatures 2: Wild ARK.
Aerosteon, meaning "Air Bone", is a large theropod dinosaur that lived in Argentina during the Late Cretaceous, 85 million years ago. At 8 meters long and 1.6 tons, Aerosteon is the largest of the megaraptorans, a group of obscure theropods that are known for their massive hand claws that they use to capture to prey. Megaraptor and Australovenator are also megaraptorans.
Aerosteon's design has been revealed, but it's unknown how it will be in Additional Creatures outside of its appearance.