FIRST ORDOVICIAN CONODONTS FROM COLOMBIA

摘要

1 INTRODUCTIONConodonts are rare fossils in Lower Palaeozoic rocks of northern South America.The only known Ordovician record is from a single site in southeastern Peru,stin to be investigated in detail (Sarmiento et al.,2001；Gutiérrez-Marco et al.,2004).The present work reports a second Ordovician site,located in Colombia,where until now only Upper Palaeozoic conodonts were known (Stibane,1967,among others).