The oldest conjoined twins in the world have died at the age of 62.

Lori and George Schappell were born in Pennsylvania in the USA on 18 September 1961.

They were conjoined at the head facing in opposite directions, and were the oldest pair of conjoined twins in the world at the time of their deaths.

Lori and George’s skulls were connected, and they shared a blood supply and about 30 percent of their brain together.

This is the rarest form of conjoined twins and only makes up between two and six percent of cases.

Lori and George Schappell. (Susan Watts/NY Daily News Archive via Getty Images)

They said that they would not like to be separated. Speaking in a documentary in 1997, George said: “Would we be separated? Absolutely not. My theory is: why fix what is not broken?”

Despite being joined at the head, the pair still lived lives independent of each other.

The pair would do their own hobbies in their own room, while the other said they would just ‘zone out’.

Lori explained: “Just because we cannot get up and walk away from each other, doesn’t mean we cannot have solitude from other people or ourselves.”

Lori and George took this attitude with them into their romantic lives as well.

Speaking to The Sun in 2011, Lori said: “When I went on dates, George would bring along books to read and, as we don’t face each other, he could ignore any kissing.”