Wollemia nobilis. Nobilis as in Chris Noble the National Parks Ranger that discovered them whilst canyoning. Are you aware that their existence is only less that 100km from central Sydney?
I suggest that you grab 'The Wollemi Pine' James Woodford, Text Publishing which is the be all and end all regarding the whole history of this amazing plant. Quite a read indeed!. Off the top of my head, there are separate Male and female cones/trees (dont quote me there, I have the book on my lap and not much time!). They all have the same DNA. A first that blew them all away. You can propagate them simply from cuttings therefore no need for cones/seeds. My efforts failed but then again I didnt really make any effort. Commercially they have been introduced from tissue culture.
Have they developed any 'icecaps' over winter?
When in doubt, check it out!