The Upper Devonian of the Somiedo area (Cantabrian Mountains, northwestern Spain)

1984 ◽  
Vol 1984 (5) ◽  
pp. 279-290
Author(s):  
G. B. S. van Loevezijn ◽  
J. G. M. Raven
Keyword(s):  
Upper Devonian ◽  
Cantabrian Mountains ◽  
Northwestern Spain

scholarly journals Famennian ostracods from the Istanbul zone (Gebze, Kocaeli, NW Turkey) and their paleogeographical relations

2012 ◽  
Vol 63 (5) ◽  
pp. 355-363 ◽  
Author(s):  
Atike Nazik ◽  
Șenol Çapkinoğlu ◽  
Emine Șeker
Keyword(s):  
North Africa ◽  
Upper Devonian ◽  
Late Devonian ◽  
Rhenish Massif ◽  
Cantabrian Mountains ◽  
Holy Cross Mountains ◽  
Thin Walls ◽  
Nw Turkey ◽  
Conodont Zonation ◽  
First Time

Abstract Famennian (Late Devonian) ostracods of the Thuringian Mega-Assemblage were recovered for the first time from three incomplete sections of the Ayineburnu Member of the Büyükada Formation in the Denizliköy area (Gebze, NW Turkey), which were sampled for conodonts. Conodont faunas define an interval extending from the Upper rhomboidea? or Lower marginifera Zone into the Middle expansa Zone of the standard Upper Devonian conodont zonation. The ostracod faunas found here consist of species mainly with thin-walls, long spines and often smooth surfaces such as Rectonaria, Tricornina, Orthonaria, Triplacera, Beckerhealdia, Timorhealdia, Bohemina, Paraberounella and Acratia. These taxa indicate faunal relationship with Thuringia and the Rhenish Massif in Germany, the Cantabrian Mountains and Pyrenees in Spain, Holy Cross Mountains in Poland, North Africa and China.

Most Paleozoic Protorthoptera are ancestral hemipteroids: major wing braces as clues to a new phylogeny of Neoptera (Insecta)

1992 ◽  
Vol 70 (12) ◽  
pp. 2452-2473 ◽  
Author(s):  
Jarmila Kukalová-Peck ◽  
Carsten Brauckmann
Keyword(s):  
Sister Group ◽  
New Method ◽  
Cantabrian Mountains ◽  
Wing Vein ◽  
Ground Plan ◽  
Northwestern Spain ◽  
The Media ◽  
Thoracic Legs ◽  
Phylogenetic Scheme ◽  
Cross Vein

The enigmatic and artificial Protorthoptera is the largest Paleozoic order of Neoptera. Typical hemipteroid head characters (inflated clypeus, styletal mouthparts) are here reported for "Protorthoptera" fossils and linked with the basic venational braces of hemipteroid wings. The "order" is recognized as being mostly composed of extremely primitive hemipteroids. Two new Late Carboniferous gerarid wings are described: Osnogerarus trecwithiensis n.gen., n.sp. from the Westphalian D of Osnabrück, Germany, and Cantabrala gandli n.gen., n.sp. from the Lower Stephanian (Cantabrian) of the Cantabrian Mountains, northwestern Spain. Several ground-plan characters of hemipteroids are described: head with visible segmentation; polyramous thoracic legs bearing exites and with trochanter not fused to prefemur; ovipositor with cutting ridges; the medial wing vein is shown as not the complete media (= M), but only the media posterior (= MP); the arculus is diagnosed as a cross-vein turned into an important brace; two radial sectors (RA and RP) originate separately from the radial basivenale; and the anal brace is formed by AA1. The hemipteroid stem-assemblage comprised (i) the gerarid line (extinct) with a long MP–CuA fusion replacing the arculus (derived) and with a repeatedly forked CuP (primitive), and (ii) the paoliid line with an arculus (a convex mp–cua cross-vein) (primitive) and a simple CuP (derived). The paoliids are the probable ancestors of modern hemipteroids. The Hemiptera (Sternorrhycha + Auchenorrhyncha + Coleorrhyncha + Heteroptera) lost the ScA + vein to a V-shaped notch or a flexion line (synapomorphy). Geraridae, Paleozoic and Recent Insecta, and all Arthropoda have demonstrably polyramous legs in the ground plan. Use of the taxon "Uniramia" is erroneous in every aspect. A new method using major venational braces is offered to define the wings of all higher neopteran taxa and to resolve the uncertain relationships between some modern orders. Polyneoptera (plecopteroids + orthopteroids + blattoids) is a polyphyletic taxon, and should be abandoned. Blattoids are not directly related to orthopteroids, but are the sister-group of hemipteroids + endopterygotes. An updated basic phylogenetic scheme of Neoptera proposed here comprises the following clades: (Pleconeoptera (Orthoneoptera (Blattoneoptera (Hemineoptera + Endoneoptera)))).

scholarly journals Patterns of movement of released female brown bears in the Cantabrian Mountains, northwestern Spain

Ursus ◽  
2017 ◽  
Vol 28 (2) ◽  
pp. 165-170 ◽  
Author(s):  
Vincenzo Penteriani ◽  
María del Mar Delgado ◽  
José Vicente López-Bao ◽  
Pablo Vázquez García ◽  
Juan S. Monrós ◽  
...  
Keyword(s):  
Cantabrian Mountains ◽  
Brown Bears ◽  
Northwestern Spain

scholarly journals Genetic and demographic recovery of an isolated population of brown bearUrsus arctosL., 1758

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1928 ◽  
Author(s):  
Elena G. Gonzalez ◽  
Juan C. Blanco ◽  
Fernando Ballesteros ◽  
Lourdes Alcaraz ◽  
Guillermo Palomero ◽  
...  
Keyword(s):  
Gene Flow ◽  
Ursus Arctos ◽  
Total Population ◽  
Habitat Degradation ◽  
Brown Bear ◽  
Genetic Admixture ◽  
Migration Process ◽  
Cantabrian Mountains ◽  
The Past ◽  
Northwestern Spain

The brown bearUrsus arctosL., 1758 population of the Cantabrian Mountains (northwestern Spain) became isolated from other bear populations in Europe about 500 years ago and has declined due to hunting and habitat degradation. At the beginning of the 20th century, the Cantabrian population split into eastern and western subpopulations, and genetic exchange between them ceased. In the early 1990s, total population size was estimated to be < 100 bears. Subsequently, reduction in human-caused mortality has brought about an increase in numbers, mainly in the western subpopulation, likely promoting male-mediated migration and gene flow from the western nucleus to the eastern. To evaluate the possible genetic recovery of the small and genetically depauperate eastern subpopulation, in 2013 and 2014 we genotyped hair and faeces samples (116 from the eastern subpopulation and 36 from the western) for 18 microsatellite markers. Data from the annual count of females with cubs of the year (COY) during the past twenty-six years was used to analyze demographic changes. The number of females with COY fell to a minimum of seven in the western and three in eastern subpopulations in the biennium 1993–1994 and reached a respective maximum of 54 and 10 individuals in 2013–2014. We also observed increased bear dispersal and gene flow, mainly from the western to the eastern subpopulation. Of the 26 unique genotypes detected in the eastern subpopulation, 14 (54%) presented an admixture composition, and seven (27%) were determined to be migrants from the western subpopulation. Hence, the two separated and clearly structured subpopulations identified in the past currently show some degree of genetic admixture. This research shows the partial demographic recovery and a change in genetic composition due to migration process in a population of bears that has been isolated for several centuries.

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