The All Living Families (ALF)) files were developed by Michael Ruggiero under contract by ITIS after the publication of the Management Hierarchy in 2015 and the final version delivered was dated 16 December 2019.
This 2019 version, to family rank, was developed in two formats. Here only the spreadsheet with a nested hierarchy is used to produce a ColDP file accompanied by a BibTeX reference file.
The result is registered in ChecklistBank.