Very true. As the author of this visualization, I airbrushed the country borders off the two most recent textures. Because it was too obvious that the borders show the Soviet Union :)
Professor Scotese was a great partner and instrumental in putting this visualization together. He's acknowledged on the site, but for those interested here is his website: http://www.scotese.com/. I believe he has a more modern iteration of the paleomap that is not downloadable on the web, but for various reasons I did not get those textures in this visualization (they didn't wrap properly iirc).
Professor Scotese was a great partner and instrumental in putting this visualization together. He's acknowledged on the site, but for those interested here is his website: http://www.scotese.com/. I believe he has a more modern iteration of the paleomap that is not downloadable on the web, but for various reasons I did not get those textures in this visualization (they didn't wrap properly iirc).
He also has a nice writeup of the methods used here: https://drive.google.com/file/d/1-q0WIa7ofISFHyBe4UxvN8DIPs8...