Possibly, though I'd think they'd come to light in a more impressive manor. How I can not begin to guess, but these aren't suppose to be just artifacts, (as it's implied there are other artifacts that aren't Arkentools) but the super artifacts.
Where did that information on ruins come from anyway?
It is marked Canon on the wiki, which should mean that Balder promoted it to Canon status.
According to the history, that particular edit
(09:02, 11 July 2009) was handled by an IP address. However, it was probably Balder.
The same IP address is used to make edits to the popping
page (08:16-09:05, 11 July 2009). This page was then subsequently edited by Balder (09:14, 11 July 2009), and he didn't revert it. He probably just forgot to log in.
Also, in this
page, he edited a comment made by the IP address and added his signature.These
are the edits made by the IP address, so he probably has a fixed IP address.