Springer, Frank,  1848-1927. <br/><br/>
On a Trenton Echinoderm fauna at Kirkfield, Ontario. 

 - Ottawa,  Government Printing Bureau,  1911. 
 - 68 p.  V pl.  25 cm. 
 - Geological Survey of Canada. Memoir  15-P .
 - Memoir (Geological Survey of Canada) ;  15 .
<br/><br/><label>LCCN: </label>gs 11000342  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleontology--Ontario.<br/>Paleontology--Ordovician.<br/>Echinodermata.
<br/><br/><label>LC Class. No.: </label>QE781