EL GENERO PLATYSTROPHIA KING (BRACHIOPODA) EN LA FORMACION SAN JUAN DE LA PRECORDILLERA ARGENTINA
Abstract"Two new species of the genus Platystrophia are described from the uppermost beds of the San Juan Formation in the Precordillera of Argentina. Conodonts which were obtained from the limestone provided Platystrophia minuta n. sp. and the graptolite fauna found in the overlying Los Azules Formation indicate an Early Ordovician age. The beds of the Talacasto region which contain Platystrophia fasciculata n. sp., are probably slightly younger than strata of the Cerro Viejo region. The occurrence oí the genus Platystrophia in Early Ordovician beds of western Argentina suggests closest paleobiogeographical affinities with both the Celtic and Baltic faunal provinces."
How to Cite
Authors publishing in Ameghiniana have the option of making their article freely available online. Authors opting for the Open Access must pay a fee of $300 (US dollars) to cover article-processing costs and to ensure the article is made open access. Please contact the Production Team after the acceptance of your manuscript if you are interested in making your article Open Access. This option implies by default a license Creative Commons Attribution Non-Commercial-NoDerivs License (CC BY NC ND). If your funding institution requires a different licensing option please communicate this to the Production Team after the acceptance of your manusctipt.