Wicander, Reed <br/><br/>
Biostratigraphic and paleogeographic implications of an upper Ordovician acritarch assemblage from the Bill's Creek and Stonington formations, Michigan, U.S.A. 

 - Prague  Univerzita Karlova  1999 
 - pp. 267-268 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ACRITARCHA<br/>BIOESTRATIGRAFIA<br/>ORDOVICICO<br/>PALEOGEOGRAFIA
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS<br/>MICHIGAN