This template is used on approximately 21,000 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them.
Bold ranks show taxa that will be shown in taxoboxes because rank is principal or always_display=yes.
Cotton, Trevor J. & Braddy, Simon J. 2004; "The phylogeny of arachnomorph arthropods and the origin of the Chelicerata" Transactions of the Royal Society of Edinburgh: Earth Sciences94(3):169-193