When mineral interests are held as JTWROS, the runsheet changes automatically on death — no probate, no deed. The surviving joint tenant simply files a death certificate and takes the full interest.
This contrasts with tenancy in common, where each owner's fractional share passes through their estate and requires probate to transfer.
For title research, JTWROS interests are easy to miss: the transfer doesn't appear in grantor-grantee records as a conveyance. Only the death certificate (sometimes filed, sometimes not) marks the change.
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