''E. saskatchewanensis'' je poznat od pet jedinki, većinom lubanja. Nađen je samo u formaciji Frenchman u Saskatchewanu.<ref name=HWF04/> Razlikuje se od druge dvije vrste po manjoj veličini.<ref name=CMS26/><ref name=DFG97/> Malo se pisalo o ovoj vrsti otkada je opisana, u odnosu na druge dvije. Radovi Nicolasa Campionea su pokazali da je vjerojatno sinonim ''E. annectens'', ali potrebno je više istraživanja.<ref name=campione2009/>
AdditionallyUz to, therepostoje aremnogi manyfosili ''EdmontosaurusEdmontosaurusa'' fossilskoji thatjoš haveuvijek notnisu beenidentificirani identifiedda topripadaju species.bilo Remainskojoj thatvrsti. haveOstaci notkoji beennisu assignedpriključeni tonekoj aposebnoj particular speciesvrsti (identified as ''E.'' sp.) maymogli extendbi theproširiti rangerasprostranjenost ofroda thedo genusformacija as far as the [[Prince Creek Formation]] of, [[AlaskaAljaska]]<ref name=bbdb07>{{cite web|url=http://www.press.uchicago.edu/books/rogers/bonebeds_chapter2_appendix.xls|title=Evolution of Terrestrial Ecosystems Bonebed Database|last=Behrensmeyer|first=Anna K.|year=2007|work=Bonebeds: Genesis, Analysis, and Paleobiological Significance|publisher=University of Chicago Press|accessdate=2008-12-07|format=Excel spreadsheet}}</ref>i and the [[Javelina Formation]] of, [[Texas]].<ref name=DBWetal04>{{cite book |last=Weishampel |first=David B. |authorlink=David B. Weishampel |coauthors=Barrett, Paul M.; Coria, Rodolfo A.; Le Loueff, Jean; Xu Xing; Zhao Xijin; Sahni, Ashok; Gomani, Elizabeth M.P.; and Noto, Christopher N. |editor=Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.)|title=The Dinosauria |edition=2nd |year= 2004|publisher=University of California Press |location=Berkeley |isbn=0-520-24209-2 |pages=517–606 |chapter=Dinosaur distribution }}</ref>
