Fedonkin, M. A. <br/><br/>
Middle Proterozoic (1.5 Ga) Horodyskia moniliformis Yochelson and Fedonkin, the oldest known tissue-grade colonial eucaryote / 
Mikhail A. Fedonkin and Ellis L. Yochelson 
 - Washington, D.C. :  Smithsonian Institution Press,  2001 
 - iii, 29 p. :  ill. ;  28  cm. 
 - Smithsonian contributions to paleobiology ;  no. 94 .
<br/><br/>Includes bibliographical references 
<br/><br/><label>LCCN: </label>2001-049570 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Horodyskia moniliformis--Montana<br/>Paleontology--Proterozoic<br/>Fossils--Montana