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Conodontes et Acritarches de l’Ordovicien inférieur de la partie Septentrionale de la Cordillère Argentine
Bultynck, P.; Martin, F. (1982). Conodontes et Acritarches de l’Ordovicien inférieur de la partie Septentrionale de la Cordillère Argentine. Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 53(4): 21 pp., 2 figs, 2 pls.
In: Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. Aardwetenschappen = Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre. KBIN: Brussel. ISSN 0374-6291, more
Peer reviewed article  

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Keywords
    Llandovery; Ordovician; Silurian; Tremadocian; Wenlock; Acritarcha; Conodonta; Argentina [Marine Regions]; Argentina, Salta [Marine Regions]; Marine

Authors  Top 
  • Bultynck, P., more
  • Martin, F.

Abstract
    The Conodonts Cordylodus proavus MULLER, K.J., 1959 et Acodus aff. A. deltatus LINDSTROM, M., 1955 are found, respectively, in the lower and the upper parts of the Santa Rosita Formation, the Tremadocian age of which is known from trilobites and dendroid graptolites. Of the acritarchs, Cymatiogalea cuvillieri (DEUNFF, J.) DEUNFF, J., GORKA, H. and RAUSCHER, R., 1974 occurs in the San Jose Shales, as well as in the Caldera Sandstones which contain also Acanthodiacrodium angustum (DOWNIE, C.) COMBAZ, A, 1967. Two conodonts, Bergstroemognathus extensus (GRAVES, R. W. and ELLISON, S., 1941) and Scandodus americanus SERPAGLI, E, 1974, s.f. from the lower part of the San Juan Limestones suggest an Arenigian rather than a Llanvirnian age, as indicated by trilobite evidence. The acritarch Domasia limaciformis (STOCKMANS, F. and WILLIERE, Y.) CRAMER, F.H., 1970, of late Llandoverian to early Wenlockian age in western Europe, is found in the Red Sandstones, in the lower part of the Lipeon Formation.

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