This is the first time I've heard about this beast. And it looks like I've already drawn something similar. And after reading the information about it, I only found out that it's from the Triassic period, the name translates as "red crocodile". And everything else sounds like this: "we don't know what it is, if we knew what it is, but we don't know what it is."

Author's list: https://www.furaffinity.net/view/58921845/