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First description of the Genus Nucleoceras Kolebaba from the Silurian of the Carnic Alps, N.E. Italy
Vengono descritti in dettaglio il genere Nucleoceras e la specie Nucleoceras cf. obelus trovato per la prima volta al di fuori dell’area tipo, la Boemia. I caratteri interni tipici del genere, vale a dire gli anelli di connessione aperti sul lato dorsale e i depositi camerali ipo/episettali ben sviluppati e dalla conformazione caratteristica, consentono un buon riconoscimento sistematico. Il campione studiato proviene dal Siluriano del versante italiano delle Alpi Carniche ed è stato rinvenuto lungo il Costone Lambertenghi presso Passo Volaia.The genus Nucleoceras and the species Nucleoceras cf. obelus are here described for the rst time outside of Bohemia, its type-area. Critical internal features of the genus, such as the open connecting rings on dorsal side and well developed hyposeptal and episeptal cameral deposits, are well preserved in the studied material, which were collected from the Silurian of the Carnic Alps (Italian side)
Lochkovian (Lower Devonian) conodonts from the Rio Malinfier section (Carnic Alps, Italy)
Conodont data from the Rio Malinfier section, located in the Cason di Lanza area (Carnic Alps, Italy) are presented.
Twelve taxa belonging to eight genera (Ancyrodelloides, Dvorakia, Icriodus, Lanea, Oulodus, Ozarkodina, Pseudooneotodus
and Zieglerodina) allow to state a middle Lochkovian (Lower Devonian) age for the section. The lithological boundary between
the Nölbling and the La Valute formations is dated to the transitans Zone
The stratigraphy of the Pre-Variscan Sequence of the Carnic Alps in thepapers by Michele Gortani and Vinassa de Regny
Retiolites angustidens Elles & Wood, 1908 (Graptholitina) from the Silurian of Mt. Cocco (Carnic Alps, Italy)
Retiolites angustidens, trovato in un blocco isolato di calcare a Orthoceras nell’area di Monte Cocco in
associazione con Monograptus cf. priodon, viene qui descritto e figugurato per la prima volta nelle Alpi Carniche: in precedenza
la sua presenza, infatti, era stata segnalata, ma mai documentata. Dato che tutti i graptoliti rinvenuti hanno un limitato valore
stratigrafico, l’età precisa dell’associazione studiata è attribuita alla Biozona a Pterospathodus am. amorphognathoides (Llandovery
sup.) in base ai conodonti.Retiolites angustidens is described and figured for the first time from the Carnic Alps, from a loose block collected
from Mt. Cocco area. ! e association includes also Monograptus cf. priodon: this species, in fact, was previously reported,
but never documented, from this area. Since all the graptolites found have a limited stratigraphic value, the precise age of
the studied association is determined by conodonts as belonging to the latest Llandovery (Pterospathodus am. amorphognathoides
conodont Zone)
I graptoliti della collezione “M. Gortani” del Museo Paleontologico “D. Lovisato” dell’Università di Cagliari
Problematic fossil remains from the Silurian Kok Formation in the type area (Carnic Alps, Italy)
I graptoliti della collezione ?M. Gortani? del Museo Paleontologico ?D. Lovisato? dell?Universit? di Cagliari
Pragian to Famennian depositional evolution of the M. Pizzul area (Carnic Alps, Italy): preliminary results
The Carnic Alps represents the non- to low-grade metamorphic portion of the Variscan substratum of the Alps (VAI 1976, SCHÖNLAUB 1979). The whole “pre-flysch” Variscan succession of the Carnic Alps is thought to have developed in correspondence of a mainly carbonate platform not deeper than few hundred meters. Up to the Pragian, the basin physiography can be roughly schematized as a ramptype, while from the Pragian to Famennian differential carbonate growth controlled by tectonics led to a differentiation between shallow water facies, high-density and low density resedimented gravitative driven deposits and deeper water facies. The study area of the M. Pizzul is located in the central part of the Carnic Alps, south of Cason di Lanza Pass and east of Mt. Zermula
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