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Two new Late Viséan (Mississippian) species of the genera Nevillea and Mikhailovella (Foraminiferida) from the Guadiato Area (SW Spain)

Cózar Maldonado, Pedro (2001) Two new Late Viséan (Mississippian) species of the genera Nevillea and Mikhailovella (Foraminiferida) from the Guadiato Area (SW Spain). Coloquios de paleontología, 52 . pp. 3-11. ISSN 1132-1660

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Abstract

Two new endemic species from the Guadiato Area are described in this work, Nevillea cordobensis and Mikhailovella fresnedosensis. These species range from the Late Viséan foraminiferal zones 14 to 15 (V3a-V3bα-β-γinf o Cf5 Cf6α-β-γ inf). The first occurrence of Mikhailovella from Zone 14 is controversial, because its first occurrence is usually used as biomarker from Zone 15. Analysis of the rest of the foraminiferal assemblages from the same levels also suggests that the first occurrence of this genus is at the base of the Late Viséan.
[RESUMEN]
En este trabajo se describen dos nuevas especies de foraminíferos endémicos del Área del Guadiato, Nevillea cordobensis y Mikhailovella fresnedosensis. Estas especies tienen un rango estratigráfico que abarca las zonas 14 y 15 de foraminíferos (V3a-V3bα-β-γinf o Cf5 Cf6α-β-γ inf), ambas en el Viseense superior. La aparición de Mikhailovella desde la Zona 14 es un dato controvertido, ya
que se considera como un taxon guía de la Zona 15. El análisis del resto de las asociaciones de foraminíferos pertenecientes a los mismos niveles sugiere que la aparición de este género desde la base del Viseense superior.

Item Type:Article
Uncontrolled Keywords:Taxonomy, Foraminifera, Carboniferous, Sierra Morena, Spain, Taxonomía, Foraminíferos, Carboníferos, Sierra Morena, España.
Subjects:Sciences > Geology > Paleontology
ID Code:10899
Deposited On:25 Jun 2010 10:04
Last Modified:06 Feb 2014 08:52

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