I have been thinking about other words which use the Latin root 'volvere' (as in evolution) which could be used to convey a similar sense to 'extravolution'.
There are various listings on Google for 'transvolution'. In many of these instances it has been used in the sense of spirituality or mind development (biological). 'Trans' can mean beyond or across but doesn't quite capture the sense that I am trying to convey with 'extravolution'. In the case of the now widely used word 'transgender' the word 'trans' conveys the sense of 'in between'. Extravolution has begun and is not 'across' or 'in between'.
There is also about one listing on Google for 'supervolution'. This word is a reasonable alternative. The word 'super' means 'above' or 'over'. It could, however, be considered a little pejorative and perhaps doesn't convey the sense of an ongoing but partially separate process.
It's interesting to see the burgeoning recognition of the extravolution process. I am sure this will snowball as people go from vague recognition to startling familiarity with extravolution (or whichever other word becomes the accepted term).