Override the taxonomy pages In Drupal 7, you can use taxonomy-term.tpl.php to override taxonomy pages.

Inside the taxonomy-term.tpl.php page, you can use &lt;?php print $term-&gt;field_NAME['und'][0]['value'];?&gt;to print out the content of any fields attached to the taxonomy term. (*)

However, how do you get to the list of nodes that is displayed on the taxonomy page? 

There doesn't seem to be anything in the taxonomy-term.tpl.php file to indicate how to theme the nodes that are displayed on the term page.

I know you can use Views to over ride the page. However, Views does not let you display nodes tagged with a term and fields that are attached to the term in a single View.

(*) I know you are not supposed to use UND. However, the correct method for access node based fields does not seem to work with taxonomy based fields.
The template file you want to use is not taxonomy-term.tpl.php; that's used for the taxonomy header at the top of the page. The template file used is node.tpl.php.

If you look at taxonomy_term_page() which is used to build the term page view, you will see the nodes are build separately by calling node_view_multiple(). node_view_multiple() is just a wrapper for node_view(), which uses the standard node.tpl.php file.

Also you should be able to use field_get_items() for taxonomy terms. I'll look for something like $field = field_get_items('taxonomy_term', $term, 'field_name');.

I haven't tried but it should work. 

You should really never use 'und', but the constant LANGUAGE_NONE.