Recursos Naturales >
Instituto de Geociencias (IGEO) >
(IGEO) Libros y partes de libros >
Open Access item A brief summary of the Ordovician conodont faunas from the Iberian Peninsula
|Authors:||Sarmiento, G. N.|
Gutiérrez-Marco, J. C.
Martín Algarra, A.
|Keywords:||Ordovician, conodonts, biostratigraphy, palaeobiogeography, reworked faunas, Spain, Portugal|
|Publisher:||Instituto Geológico y Minero de España|
|Citation:||Sarmiento, G.N., Gutiérrez-Marco, J.C., Rodríguez-Cañero, R., Martín Algarra, A., Navas-Parejo, P. (2011). A brief summary of the Ordovician conodont faunas from the Iberian Peninsula. En: Ordovician of the World. Instituto Geológico y Minero. p. 505-514|
|Abstract:||Ordovician conodont studies in the Iberian Peninsula were initiated by Fuganti and Serpagli (1968),
who recognized 21 morphospecies included in 15 morphogenera in the Upper Ordovician Urbana
Limestone from a single locality in the Central Iberian Zone. Two years later Boersma (in Hartevelt, 1970)
identified several morphotaxa in the Upper Ordovician Estana Formation of the Central Pyrenees. In the
type section of the Upper Ordovician Cystoid Limestone of the Eastern Iberian Cordillera, Carls (1975)
recognised 31 conodont morphotaxa. These pioneer findings were followed by the contributions of Kolb
(1978), Hafenrichter (1979), Robert (1980), Robardet (1982) and Sanz (1988), who increased the number
of taxa and localities with Katian conodonts, mostly attributed to the Amorphognathus ordovicicus Zone.
For twenty years, our knowledge on Ordovician conodonts came only from the single ubiquitous
limestone unit that occurs in the upper part of many Iberian successions. Nonetheless, these are
predominantly composed of terrigenous rocks (shales, siltstones and sandstones) which were deposited at
high Gondwanan paleolatitudes near the South Pole (Gutiérrez-Marco et al., 2002, 2004). Then, some of
these clastic deposits (siltstones, shales and storm-induced coquinoid lenses, sometimes calcareous) were
also sampled for conodonts: while siltstones and shales produced only fragmentary specimens, bioclastic
beds in tempestites yielded usually fragmentary, but recognisable, elements.|
|Appears in Collections:||(IGEO) Libros y partes de libros|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.