JUVENILE GASTROPODS FROM THE UPPER DEVONIAN CEPHALOPOD BEDS AND ADJACENT STRATA OF CENTRAL IRAN

Abstract
Microgastropod fauna from the Upper Devonian Cephalopod Bed and overlying
Lower Tournaisian strata of the original reference section of the Shishtu
Formation have been examined. Twenty genera and one unknown genus have
been identified. The original aragonite shells have been replaced either by pyrite
or fluorapatite