this came out of my bellhousing when i tore the transmission off

Looks like the peices of an old blown up TO bearing to me. (which could explain the new bearing retainer)
Could have been left by someone in a big hurry to change the TO bearing and doing it with the trans still on the jack, so they didn't see it.

It's too thick to be a regular bearing dust cover.
To thin to be peices of a front bearing retainer. (the blue peice)
If it's not from the back side of your TO bearing, it doesn't go to anything still in that bellhousing.

IMO

I just noticed also, that these marked area's look a lot like ball races.