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Papers by LUIS Sanchez de Posada
Revista Espanola De Paleontologia, 1986
La Era Paleozoica El Desarrollo De La Vida Marina Homenaje Al Prof Jaime Truyols Memorias De Las Vii Jornadas Aragonesas De Paleontologia 2001 Isbn 84 7820 636 1 Pags 191 222, 2001
... Localización: La Era Paleozoica : el desarrollo de la vida marina homenaje al prof. Jaime Tru... more ... Localización: La Era Paleozoica : el desarrollo de la vida marina homenaje al prof. Jaime Truyols : memorias de las VII Jornadas Aragonesas de Paleontología / coord. por José Antonio Gámez Vintaned, Eladio Liñán Guijarro, 2001, ISBN 84-7820-636-1 , pags. ...
Col Pa Publicaciones De Departamento De Paleontologia, 1982
Revista Espanola De Paleontologia, 1998
Trabajos De Geologia, Dec 31, 1999
Trabajos De Geologia, 2006
Rivista Italiana Di Paleontologia E Stratigrafia, Feb 8, 2006
Revista Espanola De Paleontologia, 1999
Resumen: La sucesión de conodontos, particularmente varias especies de Declinognathodus, es estud... more Resumen: La sucesión de conodontos, particularmente varias especies de Declinognathodus, es estudiada a lo largo de un espesor de unos 150 m de la Formación Barcaliente en su estratotipos. Todos las especies encontradas pueden ser incluidas en D. noduliferus sensu lato, primer marcador escogido para reconocer y correlacionar con el GSSP del Límite del Carbonífero medio situado entre los subsistemas Misisípico y Pensilvánico. La distribución de los conodontos, tanto en la sección estudiada como en otras secciones, aconseja la correlación cronoestratigráfica entre la capa que registra la entrada de D. inaequalis y el GSSP del Límite del Carbonífero medio, a pesar de que la aparición de los primeros Declinognathodus tiene lugar previamente en la Zona Cantábrica. Palabras clave: conodontos, GSSP del Límite del Carbonífero medio, Zona Cantábrica.
In order to analyse the provinciality and the relationships among the different Late Pennsylvania... more In order to analyse the provinciality and the relationships among the different Late Pennsylvanian areas, the geographic distribution of late Moscovian and Kasimovian articulate brachiopods is studied by cluster analysis and correspondence analysis; as a double-checking, cluster analysis was carried out using correspondence coordinates. Faunal similarities were calculated using Simpson and Jaccard coefficients. According to the distribution of brachiopods, six marine provinces (the Paleotetyan, Ural, Arctic, Midcontinent–Andean, Austral and Siberian) appear to have existed. The highest genus richness is found in the Paleotethyan, Ural and Midcontinent–Andean provinces, situated in tropical or subtropical zones. In contrast, the Siberian Province has the lowest number of genera and the highest value of endemism as well as low values of affinity with all other provinces, suggesting an isolated position of the area in a northern latitude. Values of affinity indexes coupled with multiva...
Rivista Italiana di Paleontologia e Stratigrafia
The stratigraphy of latest Arnsbergian to early Chokierian (Serpukhovian/Bashkirian) is described... more The stratigraphy of latest Arnsbergian to early Chokierian (Serpukhovian/Bashkirian) is described for the Barcaliente Formation in the Cantabrian Mountains. The conodont content has been studied at the Millaró section, where the appearance of Declinognathodus noduliferus Ellison & Graves, in the lower metres of the Barcaliente Formation is confirmed, and the location of the Mississippian/Pennsylvanian boundary is discussed. The new subspecies D. noduliferus bernesgae is described and other records are also studied from the Pyrenean Azkarate section. First occurrences of Declinognathodus species are discussed from different basins, and a sequence of first appearances is applied for world-wide correlation. The lowest occurrence of D. inaequalis at the Mid-Carboniferous boundary GSSP is preferred as the primary correlation marker, because D. noduliferus s.l. includes several different taxa. Gnathodus and Lochriea species persist above the base of the Pennsylvanian and disappear in the ...
Pre-Mesozoic Geology of Iberia, 1990
A new ostracod found in the Mississippian of the Cantabrian Mountains shows ornamental features s... more A new ostracod found in the Mississippian of the Cantabrian Mountains shows ornamental features similar to Criboconcha Cooper, hitherto known from Mississippian and Pennsylvanian strata of different parts of the world (especially from the U.S.A.). However, some features of this ostracod are very different from the typical characteristcs of the Healdiidae and support bairdiocyproidean affinities. The new genus Pseudocriboconcha (type
Congr. Int. Geol. Estrat. …, 1980
… de departamento de …, 1982
Revista Espanola De Paleontologia, 1986
La Era Paleozoica El Desarrollo De La Vida Marina Homenaje Al Prof Jaime Truyols Memorias De Las Vii Jornadas Aragonesas De Paleontologia 2001 Isbn 84 7820 636 1 Pags 191 222, 2001
... Localización: La Era Paleozoica : el desarrollo de la vida marina homenaje al prof. Jaime Tru... more ... Localización: La Era Paleozoica : el desarrollo de la vida marina homenaje al prof. Jaime Truyols : memorias de las VII Jornadas Aragonesas de Paleontología / coord. por José Antonio Gámez Vintaned, Eladio Liñán Guijarro, 2001, ISBN 84-7820-636-1 , pags. ...
Col Pa Publicaciones De Departamento De Paleontologia, 1982
Revista Espanola De Paleontologia, 1998
Trabajos De Geologia, Dec 31, 1999
Trabajos De Geologia, 2006
Rivista Italiana Di Paleontologia E Stratigrafia, Feb 8, 2006
Revista Espanola De Paleontologia, 1999
Resumen: La sucesión de conodontos, particularmente varias especies de Declinognathodus, es estud... more Resumen: La sucesión de conodontos, particularmente varias especies de Declinognathodus, es estudiada a lo largo de un espesor de unos 150 m de la Formación Barcaliente en su estratotipos. Todos las especies encontradas pueden ser incluidas en D. noduliferus sensu lato, primer marcador escogido para reconocer y correlacionar con el GSSP del Límite del Carbonífero medio situado entre los subsistemas Misisípico y Pensilvánico. La distribución de los conodontos, tanto en la sección estudiada como en otras secciones, aconseja la correlación cronoestratigráfica entre la capa que registra la entrada de D. inaequalis y el GSSP del Límite del Carbonífero medio, a pesar de que la aparición de los primeros Declinognathodus tiene lugar previamente en la Zona Cantábrica. Palabras clave: conodontos, GSSP del Límite del Carbonífero medio, Zona Cantábrica.
In order to analyse the provinciality and the relationships among the different Late Pennsylvania... more In order to analyse the provinciality and the relationships among the different Late Pennsylvanian areas, the geographic distribution of late Moscovian and Kasimovian articulate brachiopods is studied by cluster analysis and correspondence analysis; as a double-checking, cluster analysis was carried out using correspondence coordinates. Faunal similarities were calculated using Simpson and Jaccard coefficients. According to the distribution of brachiopods, six marine provinces (the Paleotetyan, Ural, Arctic, Midcontinent–Andean, Austral and Siberian) appear to have existed. The highest genus richness is found in the Paleotethyan, Ural and Midcontinent–Andean provinces, situated in tropical or subtropical zones. In contrast, the Siberian Province has the lowest number of genera and the highest value of endemism as well as low values of affinity with all other provinces, suggesting an isolated position of the area in a northern latitude. Values of affinity indexes coupled with multiva...
Rivista Italiana di Paleontologia e Stratigrafia
The stratigraphy of latest Arnsbergian to early Chokierian (Serpukhovian/Bashkirian) is described... more The stratigraphy of latest Arnsbergian to early Chokierian (Serpukhovian/Bashkirian) is described for the Barcaliente Formation in the Cantabrian Mountains. The conodont content has been studied at the Millaró section, where the appearance of Declinognathodus noduliferus Ellison & Graves, in the lower metres of the Barcaliente Formation is confirmed, and the location of the Mississippian/Pennsylvanian boundary is discussed. The new subspecies D. noduliferus bernesgae is described and other records are also studied from the Pyrenean Azkarate section. First occurrences of Declinognathodus species are discussed from different basins, and a sequence of first appearances is applied for world-wide correlation. The lowest occurrence of D. inaequalis at the Mid-Carboniferous boundary GSSP is preferred as the primary correlation marker, because D. noduliferus s.l. includes several different taxa. Gnathodus and Lochriea species persist above the base of the Pennsylvanian and disappear in the ...
Pre-Mesozoic Geology of Iberia, 1990
A new ostracod found in the Mississippian of the Cantabrian Mountains shows ornamental features s... more A new ostracod found in the Mississippian of the Cantabrian Mountains shows ornamental features similar to Criboconcha Cooper, hitherto known from Mississippian and Pennsylvanian strata of different parts of the world (especially from the U.S.A.). However, some features of this ostracod are very different from the typical characteristcs of the Healdiidae and support bairdiocyproidean affinities. The new genus Pseudocriboconcha (type
Congr. Int. Geol. Estrat. …, 1980
… de departamento de …, 1982