These records are not real records and need to be deleted.
These are not records. Those are profiles, identified by the PIDs (person ids) you posted.
When you look at those people records, it looks like deliberate vandalism, and of course the delete function is not available.
It doesn't look like deliberate vandalism to me. If you look at the change log, all four of these profiles were created the same day by the same person with the information in them exactly as is it today. The three children have no changes on them so the person who entered them could delete them if someone contacted him or her. It looks like the mother had her parents merged with duplicated so she cannot be deleted.
My theory is that this is someone who used his own system for building the skeleton of a tree based on "I know they had one more daughter and that she had three daughters but I don't know anything else yet" and never came back to do more. Not a great practice in a common tree but not vandalism.