Lochkovian to Pragian (Lower Devonian) neritic Ostracodes from Nigüella (Zaragoza, Iberian Chains, NE Spain)

Abstract

Lochkovian and Pragian ostracodes from the area of Nigüella (Iberian Chains), which is a key area for supra-regional correlation in the Early Devonian, are described for the first time. 12 ostracode taxa from the sections Ni4 and Ni2 could be identified. The silicified ostracodes of Eifelian Ecotype are low in biodiversity, have few individuals, and are comparatively poorly preserved. Characteristic taxa of the Devonian occur. Thus, the faunas show general relations to most European Early Devonian ostracode faunas. Closer relations exist to the Eastern Guadarrama. Polyzygia kroemmelbeini LeFèvre & Weyant, 1967 and P. grekoffi Weyant, 1980 are found in the basal Pragian for the first time. Bollia bezagora Becker, 2004 is reported from the Lochkovian for the first time.