Wow !
I'm almost a prophet
. I expected WILLOWTREE to use this argument but over in the Bible thread.
Let me see if I can explain the difference in a straightforward way. I have no formal education in any biology related subject beyond O-level - the exams you took at ~16 in my part of England in the 1970s - so if I screw up in the evolutionary part I hope some of those who know more will correct it (and be gentle with me !).
In terms of describing the lineage of a given individual (in our case the current Queen of England) you are,
by definition, talking about individuals. Specifically, you are talking about parent to child relationships. You are saying this person is the son/daughter of that person. Family trees for people are very exact things - if I don't know who my grandparents are how can I claim that someone is my great-grandparent ? It is simply impossible.
In terms of describing the lineage of a given species you are,
by definition talking about species. As I understand it the original lineage charts for species were derived based on the morphology (structure and shape) of the fossils in the fossil record. As such the lineages derived from the fossil record reflect the general path from one species to another based on traceble changes in structure coupled with position in the fossil record.
In other words you're trying to compare apples and oranges. The lineage of individuals is not the same as the lineage of species.