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Quite a large number things have both heads and teeth.  Some things have teeth that are bigger than other things.  Similarly some things have heads that are bigger.  This forms the basis of the H & T (Heads and Teeth) taxonomic system.  Five groupings of things are formed as the basis of this taxonomy.

The major and most important groupings are:

1. No Teeth. (since some things don't have teeth.)
2. Small Head, Small Teeth. (some things have small heads and small teeth)
3. Big Head, Small Teeth. (some things have big heads and small teeth)
4. Small Head, Big Teeth.  (some things have small heads and big teeth)
5. Big Head, Big Teeth.  (some things have big heads and big teeth)

Please note that some things can also have big eyes however this forms part of a subclassification of things.  Diagramatic representations of these groupings can be seen on the left.  Images should open in a new browser window.

The Subclassification catagories in this system include: noses, legs, squishiness and hairyness. The current full specification can be seen by clicking the button below.

For Example the purple house banana is given the classification NHNTNENNNLNLNBVSHN.  Since it has no head, no teeth, no eyes, no nose, no legs, no lugs, is not big, is very squishy and is not hairy.

Work on this taxonomic system is ongoing, as research makes progress into the definition of Things then refinements will be made, details will be published here in the future.