Muir-Wood, Helen M. <br/><br/>
A New Species of the Jurassic Brachiopod Genus Septirhynchia 

 - Washington, D.C :   Smithsonian Institution,   1951. 
 - 6 p. :   láms. ;   18 cm. 
 - Smithsonian Miscellaneous Colections ;   Vol.116, Nº6 .