The small ankykosaur that was shown in yesterday's post was an important part of the South American ecosystem. The animal was not only a prey item for large theropods but also smaller theropods and filled an important niche as an underbrush feeder. Antarctopelta was a short dinosaur and only capable of racing certain levels of vegetation. Some illustrations show the dinosaur reaching up into the lower boughs of trees by bracing itself on tree trunks. This possibility, and other aspects of the anatomy of Antarctopelta, will be investigated during this week.