Based on palatine tooth plates, the species E. barberi, E. mirificus, and E. snowhillensis have been estimated at over  in length, with one individual of E. mirificus reaching .
Based on palatine tooth plates, the estimated lengths for E. barberi, E. mirificus, and E. snowhillensis are greater than a given dimension, with one individual of E. mirificus surpassing that measurement.