To try and get my head around the various models of taxon names, usages, and concepts being discussed I've created a graph of my understanding of the data model underlying ZooBank http://iphylo.blogspot.co.uk/2012/11/zoobank-data-model.html . This may or may not reflect the actual situation, I'll leave that to Rich to comment on.

Regards

Rod

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Roderic Page
Professor of Taxonomy
Institute of Biodiversity, Animal Health and Comparative Medicine
College of Medical, Veterinary and Life Sciences
Graham Kerr Building
University of Glasgow
Glasgow G12 8QQ, UK

Email: r.page@bio.gla.ac.uk
Tel: +44 141 330 4778
Fax: +44 141 330 2792
Skype: rdmpage
Facebook: http://www.facebook.com/rdmpage
Twitter: http://twitter.com/rdmpage
Blog: http://iphylo.blogspot.com
Home page: http://taxonomy.zoology.gla.ac.uk/rod/rod.html
Citations: http://scholar.google.co.uk/citations?hl=en&user=4Z5WABAAAAAJ