Cladograms show us points where organisms shared a common ancestor.
 

Notice where the lines intersect. Each of these intersections represents a shared (or common) ancestor. Click on the common ancestor represented by the blue dot to see its descendants.

Deinonychus © 1995 B. Cunningham; Archaeopteryx by Dave Smith, © UCMP; Grey Crowned Crane (Balearica regulorum) and Bald Eagle (Haliaeetus leucocephalus) by Gerald and Buff Corsi, © 2003 and 2004, respectively, California Academy of Sciences.