FIRST RECORD OF ASHGILLIAN CONODONTS IN THE ARGENTINE PRECORDILLERA

Susana Heredia

Abstract


A reworked conodont
fauna from the Empozada Formation (Mendoza Precordillera) which belongs to the Caradoc-Ashgill
(British Series from the Upper Ordovician) interval is reviewed. For the first time Amorphognathus cf. ordovicicus
Branson & Mehl, 1933 is identified in Argentina. This species together with A. superbus, define
the late Caradoc-earliest Ashgill of the Precordillera. The recovered conodont fauna is similar in composition
with those of the British Province of the North Atlantic Realm, suggesting close relationships between
both areas.

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