Using Shonisaurus sikanniensis as a model, the researchers estimated the ichthyosaur to have been  long, nearly the size of a blue whale. Scaling based on Besanosaurus, however, found a shorter length estimate of .
By employing Shonisaurus sikanniensis as a benchmark, the researchers determined that the ichthyosaur was remarkably lengthy, comparable in scale to a blue whale. Conversely, scaling it against Besanosaurus resulted in a more conservative length estimate of .