Li, Jun <br/><br/>
The acritarchs of the South Chinese Azygograptus suecicus graptolite Biozone and their bearing on the definition of the Lower-Middle Ordovician boundary 

 - Paris  Académie des Sciences|Elsevier  Mars-Avril 2002 
 - pp. 75-81  ilus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ACRITARCHA<br/>BIOESTRATIGRAFIA<br/>ORDOVICICO
<br/><br/><label>Subjects--Geographic Terms: </label><br/>CHINA