Do you have two bones under your tongue?

‘Went to the Dentist today and they took an x-ray (a filling pop’d out a few days ago). During the x-ray I was informed that its not normal to have two little bones under your tongue.

Does anyone else have this? I’m trying to google it, but haven’t really found anything. The two bones are on either side under my tongue. My Mother has them too, but I’m assuming not a lot of people have it. ( I thought everyone had them! And keep in mind, they aren’t sores or anything. I’ve always had them, yadda yadda yadda.)