INSUGEO   12554
INSTITUTO SUPERIOR DE CORRELACION GEOLOGICA
Unidad Ejecutora - UE
artículos
Título:
Selected Middle Ordovician key conodont species from the Santa Gertrudis Formation (Salta, Argentina): an approach to its biostratigraphical significance
Autor/es:
HEREDIA SUSANA; CARLOROSI JOSEFINA; G.N. SARMIENTO
Revista:
GEOLOGICAL MAGAZINE
Editorial:
CAMBRIDGE UNIV PRESS
Referencias:
Lugar: Cambridge; Año: 2016 p. 1 - 1
ISSN:
0016-7568
Resumen:
We have analysed a newly exposed conodont association from the Santa Gertrudis Formation in the Mojotoro Range, Eastern Cordillera of Salta province, Argentina. The key species Baltoniodus triangularis (Lindström), Trapezognathus quadrangulum (Lindström) and Erraticodon patu Cooper are present. A new species of the genus Baltoniodus (Baltoniodus cooperi sp. nov.) and elements of Periodon aff. P. flabellum are included in this conodont study. The key conodont B. triangularis indicates an age of lower Dapingian (Middle Ordovician) for the bearing strata. This was also recognized in other localities of the Eastern Cordillera, allowing their correlation. The conodontsfrom the Santa Gertrudis Formation provide conclusive elements on palaeogeographic interpretation by sharing species with Baltoscandia, South China and Australia, suggesting strong faunal affinitieswith these provinces.
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