Santa Fe R. Jaw
This is a jaw with four teeth which I found in the Santa Fe River in North Florida.
This jaw was the subject of an identification 'quiz' here on The Fossil Forum. If you wish to venture an identification or you just want to find out what animal this jaw represents, you can navigate to the quiz thread here:
(This image is best viewed by clicking on the button on
the upper right of this page => "other sizes" => "large".)