"Hydotherikornis oregonus" (Described by Miller in 1931), the oldest purported alcid from the Eocene of California, is actually a petrel (as reviewed by Chandler in 1990) and is reassigned to the tubenoses (Procellariiformes). A 2003 paper entitled "The Earliest North American Record of Auk (Aves: Alcidae) From the Late Eocene of Central Georgia" by Robert M. Chandler and Dennis Parmley of Georgia College and State University reports a Late Eocene, wing-propelled diving, auk from the Priabonain Stage of the Late Eocene. These sediments have been dated through Chandronian NALMA {North American Land Mammal Age}, at an estimate of 34.5 to 35.5 million years on the Eocene time scale for fossil bearing sediments of the Clinchfield Formation, Gordon, Wilkinson County, Georgia. Furthermore, the sediments containing this unabraded portion of a left humerus (43.7 mm long) are tropical or sub-tropical as evidenced by a wealth of warm water shark teeth, palaeophied snake vertebrae and turtles.