who sits inside whom · where animals, fungi and plants actually are
Built as a memo rather than a table: the thing worth hanging it up for reads across the room, with the full reference in smaller type below it.
Three sizes in one archive — from a sheet on the fridge to a poster on the wall.
A box is a clade: a group with all its descendants. Deeper shared box, closer kin. The dashes ring a hole — and a group with a hole is not a clade.
The mitochondrion in every one of your cells descends from a free-living bacterium: its own circular DNA, its own ribosomes, dividing on its own schedule and inherited from your mother alone. The host cell was an archaeon of the Asgard group — which is why the "eukaryotes" box on this sheet sits inside the "archaea" box rather than beside it.
Plants did it twice: the chloroplast is a second such captive, a cyanobacterium. A green leaf is therefore an archaeon that swallowed two different bacteria, hundreds of millions of years apart.
Why the numbers can be trusted. Every countable number here is computed from data rather than typed in, and the sheet must pass 5 independent checks before it is allowed to build — how many items there are, the order they come in, and the claim in the highlighted box itself. If one fails, there is no file.
from the Challenger Deep to the summit of Everest · one scale, nothing compressed
from the first synapsid to us · 320 million years on one axis
when each group appeared · five hundred million years on one axis
fifteen formulas · every letter explained beneath it