A new species, Ozarkodina huenickeni, from the upper Silurian - Lower Devonian in San Juan Precordillera, South America

摘要

The study on Silurian-Devonian conodonts from the Precordillera has shown a significant increase in the last 5 years. In the new conodont collections, particular specimens of Ozarkodina were obtained from the middle and upper parts of the Los Espejos Formation in the Talacasto region. The taxonomic study allows us to propose a new species of the genus Ozarkodina, named Ozarkodina huenickeni sp. nov., which shows three different morpho-types, alpha, beta and gamma, respectively, based on the presence of ornamentation above the platform lobes. The species ranges from the Pedavis latialata-Ozarkodina snajdri interval Zone to the Icriodus hesperius Zone, Ludfordian to early Lochkovian in age. The phylogenetic analysis of Oz. huenickeni sp. nov. allows us to propose that this species could belong to the bohemica lineage, probably representing a South American endemic taxon.