However, Arbour & Currie (2015) questioned whether or not the sternum was preserved. The bone, tentatively identified as the left sternum, was found adjacent to various other elements and its boundaries remain unclear. The sternum could have possibly been displaced post-mortem, resulting in the anteriorly pointing posterolateral process.
The identification of the sternum is in question, as Arbour & Currie (2015) raised doubts about its preservation. The bone, initially thought to be the left breastbone, was found near other skeletal elements and its boundaries are unclear.