Edmontosaurus vs Anatosaurus

let me get this out of the way before this begins; I don't care which name is more accurate. in the end all that matters is that it is

the more accurate. There are several differences between the two, and I want to contrast them. I will refer to them as anatosaurus and edmontosaurus for sake of clarity, and simplicity. With all that said don't expect a professional review. 




Edmontosaurus is the large animal to the right, and Anatosaurus is the hulking behemoth to the left.

1st difference: Skull shape
*1
 As you can see, Anatosaurus skulls are more level with a flatter beak. They also lack the distinctive eyebrow ridges shown on Edmontosaurus. 

2nd difference: soft tissue

it is true the pattern shown on Anatosaurus is based on Saurian's color scheme, but where did they get the idea to put stripes on the torso and tail? From a mummy of course. Anatosaurus  and Edmontosaurus mummies are some of the most common types of dinosaur mummy. An Edmontosaurus mummy was found with a weird trait never seen before in Anatosaurus; a comb.
Credit: John Hutchinson

This trait has not been observed in Anatosaurus mummies (IE. AMNH 5060)

3rd: difference: tail
Anatosaurus' tail was about 5 times the length of it's femur while edmontosaurus' tail was almost 4 times the length of it's femur

4th difference: time & place
Edmontosaurus is only known from the Horseshoe Canyon formation of Alberta. A campanian fossil deposit. Anatosaurus is found in the well known Hell Creek formation of montana, the Frenchman formation of the Saskatchewan, the Lance formation of South Dakota & Wyoming) and the Javelina formation of Texas.  To dispute the idea of these two being different sex's of the same species; all Edmontosaurus specimens are geologically older than Anatosaurus specimens.

5: Size
And now we get to the big elephant in the room. size. X-rex an Anatosaurus is enormous. Edmontosaurus (shown at 40ft in length) is large, but not exactly as large as X-rex.
sources:
*1: hovoseniorenacademie.nl/filead…
phenomena.nationalgeographic.c…
*2: en.wikipedia.org/wiki/Edmontos…