My wife insists that thing is called a Choco Rhino, despite it looking pretty clearly like a Triceratops to me. I don't know, I never played Super Mario Land, or World, or whichever one was on the SNES. I missed that generation Nintendo Platform do to the Sega Genesis.
But I did have Super Mario 3 for the NES. As such I was waiting long and hard for Racoonity Mario. I wish he were blue and red, but we can't have everything. He's pretty darn awesome.