This was the initial drawing the skulossi, done back in June of 2022. You might notice that means it was drawn well before the first cygnosaurs. And that's because it was originally a visualization of the "giant sauropod-like skuorc" idea Sheather had.
He liked the concept drawn out, but it was different from what he envisioned (more diplodocid-like than macronarian). Rather than discard the idea, he liked it enough to keep it in, while later inventing his idea as the cygnosaurs, so that's why there are now two independently evolved groups of giant sauropod-like skuorcs.
The final design looks almost exactly the same except it was enlarged a bit, elongated in its proportions, and has a bit more of an extensive coat of scutes. So far, this is the heaviest animal to ever walk the surface of Serina (for which I know the measurements). Also, I invented several more species, which you'll see soon enough...