Where does the fate map of a human embryo end?
In the developing embryo you have the three germ layers: Endoderm, mesoderm and ectoderm. From these layers all cell lineages of the body develop and can be traced back through their differentiation and migration to this three layers.
Have a look on the image below, which illustrates this pretty nicely:



The figure is part of this PhD thesis, which also seems worth reading when you are interested in this topic.