Name: Aerosteon riocoloradense
Name Meaning:Río Colorado Air Bone
First Described: 2009
Described By: Sereno et al.
Classification: Dinosauria, Saurischia, Theropoda, Neotheropoda, Averostra, Tetanurae, Orionides, Avetheropoda, Allosauroidea, Allosauria, Carcharodontosauria, Neovenatoridae, Megaraptora
Aerosteon was another megaraptorid that was about 9 meters long and a little over 3 meters high. It was found in the Anacleto Formation in Argentina, and it lived in the Santonian stage of the Late Cretaceous, about 84 million years ago. Its classification is under some debate and it has been considered a tyrannosauroid. As it is only known from scattered remains, more specimens should be found before any real conclusions can be made about its classification. It had air filled spaces in its bones, giving it very lightweight bones and its possible that it had an avian like respiratory system, making me fairly convinced it should be rendered with feathers. This would have allowed for greater airflow to and from Aerosteon’s lung, allowing it to regulate its temperature and breathe faster, making it a very active predator.
Shout out goes to xtori34!