In a message dated 9/7/00 1:31:34 PM EST, tmk@dinosauricon.com writes: << Which sense of Ankylosauridae is this, _sensu lato_ (including Polacanthinae), or _sensu stricto_? >> Tracy recognizes three ankylosaurian families according to body armor patterns: Ankylosauridae, Polacanthidae, and Nodosauridae. So it would be sensu stricto.