However, as someone who has a very nice Garrett metal detector with multiple heads, the part of the story that raised huge red flags as to accuracy was, “......metal detector searching a freshly plowed carrot field in Switzerland found — as well as other surprising items including a bear's tooth, a beaver's tooth and a fossilized shark's tooth.......”
Teeth don't show up on a metal detector at least no metal detector I am familiar with. metal over various kinds does, so I really have to question the degree of accuracy in the entire story. The archaeologists could have found those things after they started carefully digging, but the whole story smells of inaccuracy.
He just found a metal disc.
The archaeologist found the teeth and other stuff................
Obviously he found those non-metal items whilst digging up the metals.