A cladogram is a stylized diagram that looks like a series of Y's or forks in a road. At each branch, or Y junction, novel characters of evolutionary origin are used to separate off one group from the rest. Cladograms can be constructed for any group of organisms.
I checked with the bubbly brain on staff, Bruce Sanderson (who reviews Champagne for Wine Spectator), and he says, Champagne can age well. High acidity and carbon dioxide act as preservatives as it ages in the bottle prior to disgorgement. After disgorgement, Champagne will develop like a still wine. If the quality is high (i.e., an excellent vintage-dated bubbly) and it is well stored, Champagne is capable of long aging.
Keeping opened wines beyond 3 days is like playing golf in a lightning storm. You may get through but you are tempting the fates. If you keep a table wine for more than 3 days, you will be serving a wine that has lost most of the characteristics that are prized. The aroma will start to change and much of the fresh fruit smells and tastes will subside.