Submitted by Ujval Shah on Mon, 11/29/2010 - 12:23
Drupal 6 uses single '-' notation while Drupal 7 uses '--' notation.
Drupal - 6:
node-[content-type].tpl.php
Example : node-blog.tpl.php
Drupal - 7:
node--[content-type].tpl.php
Example: node--blog.tpl.php