Williams Alwyn ; Brunton CHC; Carlson SJ & Alvarez F <br/><br/>
Treatise on Invertebrate Paleontology, Part - H Brachiopoda, Vol 2 : Linguliformea, Craniiformea and Rhynchonelliformea (part) .-Revised .-0-8137-3108-9 

 - Revised  
 -  Geological Society of America and The University of Kansas, USA, Kansas  2000 
<br/><br/><label>ISBN: </label>0-8137-3108-9 
<br/><br/><label>Dewey Class. No.: </label>H6:(K1)   P.2/B28169