Early ordovician chitinozoans from the East Cordillera of Southern Bolivia

This is the first report of Early Ordovician chitinozoans from sections near Culpina and the Sama Anticline, East Cordillera of southern Bolivia. The chitinozoans constitute a low diversity and moderately preserved peri-Gondwana assemblage consisting of the genera Conochitina and Desmochitina. Stratigraphically, the associations are correlated with graptolites. The faunistic relationships are briefly discussed.