Dean, W.T. <br/><br/>
An occurrence of the trilobite Dechenella (Dechenella) in the Middle Devonian Landry Formation, western district of Mackenzie 

 - Ottawa, Ontario  Geological Survey of Canada  1969 
 - pp. 51-53  láms. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DEVONICO<br/>TRILOBITA
<br/><br/><label>Subjects--Geographic Terms: </label><br/>CANADA