"No." Which galls him more than he wants to admit. "I have theories, though. I think whoever left the marks was keeping watch on the dragons, viewing them over a long period of time until there was enough bone for the runes. Likewise, even though it's underwater, I believe Logistykon's skeleton shares the same runes."

These theories are based off of one single scale he found and a lot of time on his hands. He's not specifying that much, though.