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Pondrelli M.,University of Chieti Pescara | Corradini C.,University of Cagliari | Simonetto L.,Museo Friulano di Storia Naturale | Corriga M.G.,University of Cagliari | And 5 more authors.
International Journal of Earth Sciences | Year: 2014

The Carnic Alps represent the best exposed Paleozoic succession within the Alpine domain being fossiliferous, mostly non-metamorphic and largely complete. This study focuses on the area around Mt. Pizzul, because the bedrocks record well the basin dynamics and most of the units are conodont bearing. Our aims were to contribute to the procedure of formalization of the lithostratigraphic units and to understand the depositional and deformation history of the study area. The area has been mapped, tectonic overprint constrained and the successions described, measured and dated. As a second-order aim, we discuss these data to infer the relations with other parts of the Carnic basin and to recognize the global controls on sedimentation. The depositional evolution can be sketched as follows: pre-Hirnantian ramp-type margin; Hirnantian glacioeustatic-related deposits and unconformity; pelagic deposition in a ramp-type margin (Přídolí–Eifelian); slope formation and differentiation in buildup, foreslope and pelagic environments (Eifelian–Frasnian); transgression and reef drowning (Frasnian–Visean); probable subaerial exposures likely during in uppermost Famennian and Visean times; and turbidite deposition (Visean). Global controls or deposits suggesting a global control are documented, including the Boda Event, the Hirnantian glaciation, the Middle Devonian reef growth, the Kačák Event, and the high-frequency sea-level fluctuations around the Devonian–Carboniferous boundary. The drowning of the buildups here and elsewhere in the Carnic Alps started during the Frasnian, unlike observed globally. This suggests that local tectonics lead to progressive deepening up to the transition to turbidite deposition. © 2014, Springer-Verlag Berlin Heidelberg. Source

Selden P.A.,University of Kansas | Selden P.A.,Natural History Museum in London | Wilson G.D.F.,Saugatuck Natural History Laboratory | Simonetto L.,Museo Friulano di Storia Naturale | Dalla Vecchia F.M.,Institute Catala Of Paleontologia M Crusafont
Journal of Crustacean Biology | Year: 2016

The first asellote isopod from the fossil record is described here as Fornicaris calligarisi Wilson and Selden, n. gen. and sp. The two specimens, both probably males, showing dorsal morphology, come from loose material of the Dolomia di Forni Formation in the bed of the Tagliamento River below the town of Forni di Sotto, Udine Province, Friuli Venezia Giulia Autonomous Region, northeastern Italy. The Dolomia di Forni Formation is Triassic (Norian) in age, and the fossils date from approximately 210-215 Ma. Characters such as narrow, elongate eye stalks, tiny uropods, and enlarged first pereionite (found in terminal males) place the fossil within the Paramunnidae. Parsimony analysis using TNT placed the fossil within the Austrosignum-Munnogonium species complex. The robust pereiopods with hooked tips, elongate and robust carpus and propodus of pereiopod I, axial compression of the pereion, and the large size of the fossils (>2× related extant taxa) are features particular to the fossil genus and species. © 2016 Copyright 2016 by The Crustacean Society. Published by Brill NV, Leiden. Source

Paoletti M.G.,University of Padua | Blakemore R.J.,Hanyang University | Csuzdi C.,Eszterhazy Karoly College | Dorigo L.,Museo Friulano di Storia Naturale | And 12 more authors.
PLoS ONE | Year: 2016

A new Italian earthworm morphologically close to the similarly large and anecic Eophila tellinii (Rosa, 1888) is described. Distribution of Eophila crodabepis sp. nov. extends over 750 km2 from East to West on the Asiago Plateau and Vittorio Veneto Hills, from North to South on mounts Belluno Prealps (Praderadego and Cesen), Asiago, Grappa and onto the Montello foothills. This range abuts that of Eophila tellinii in northern Friuli Venezia Giulia region. Known localities of both E. tellinii and E.crodabepis sp. nov. are mapped. mtDNA barcoding definitively separates the new western species from classical Eophila tellinii (Rosa, 1888). © 2016 Paoletti et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Source

Neenan J.M.,University of Zurich | Li C.,CAS Institute of Vertebrate Paleontology and Paleoanthropology | Rieppel O.,The Field Museum | Bernardini F.,Abdus Salam International Center For Theoretical Physics | And 3 more authors.
Journal of Anatomy | Year: 2014

The placodonts of the Triassic period (~252-201 mya) represent one of the earliest and most extreme specialisations to a durophagous diet of any known reptile group. Exceptionally enlarged crushing tooth plates on the maxilla, dentary and palatine cooperated to form functional crushing areas in the buccal cavity. However, the extreme size of these teeth, combined with the unusual way they occluded, constrained how replacement occurred. Using an extensive micro-computed tomographic dataset of 11 specimens that span all geographic regions and placodont morphotypes, tooth replacement patterns were investigated. In addition, the previously undescribed dental morphologies and formulae of Chinese taxa are described for the first time and incorporated into the analysis. Placodonts have a unique tooth replacement pattern and results follow a phylogenetic trend. The plesiomorphic Placodus species show many replacement teeth at various stages of growth, with little or no discernible pattern. On the other hand, the more derived cyamodontoids tend to have fewer replacement teeth growing at any one time, replacing teeth unilaterally and/or in functional units, thus maintaining at least one functional crushing area at all times. The highly derived placochelyids have fewer teeth and, as a result, only have one or two replacement teeth in the upper jaw. This supports previous suggestions that these taxa had an alternative diet to other placodonts. Importantly, all specimens show at least one replacement tooth growing at the most posterior palatine tooth plates, indicating increased wear at this point and thus the most efficient functional crushing area. © 2014 Anatomical Society. Source

Selden P.A.,Natural History Museum in London | Dunlop J.A.,Leibniz Institute for Evolution and Biodiversity Science | Simonetto L.,Museo Friulano di Storia Naturale
Rivista Italiana di Paleontologia e Stratigrafia | Year: 2016

A new and wellpreserved fossil whip scorpion (Arachnida: Uropygi: Thelyphonida) is described from the Late Carboniferous of the Carnic Alps, Friuti, Italy. It is referred to Parageralinura marsiglioi n. sp. The new specimen is the first Carboniferous arachnid to be described from mainland Italy and is possibly the youngest Palaeozoic thelyphonid. ,. Source

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