169,868 research outputs found
Challenges encountered during acid resin transfer preparation of fossil fish from Monte Bolca, Italy
No full textCopyright: Palaeontological Association May 2015.
This is an open access article, available to all readers online, published under a creative commons licensing (https://creativecommons.org/licenses/by/4.0/). The file attached is the published version of the article.NHM Repositor
I frammenti di ambra rinvenuti nei livelli dell’Eocene inferiore della carota recuperata presso la Pesciara di Bolca nel giugno del 2015
No full textLa campionatura di dettaglio della carota recentemente recuperata in prossimità della Pesciara di Bolca sta fornendo interessanti dati paleontologici e geochimici il cui studio è in corso. In questa nota preliminare vengono segnalati e descritti alcuni frammenti di ambra rinvenuti in tre diversi livelli stratigrafici della carota. Questo ritrovamento arricchisce il quadro delle segnalazioni di ambra nel sito di Bolca e conferma l’ipotesi che lega l’essudazione della resina con il raffreddamento immediatamente successivo all’optimum climatico dell’Eocene inferiore (EECO).A detailed sampling of the core recently drilled near the Pesciara di Bolca allowed to obtain new and interesting paleontolog- ical and geochemical data currently under study. In this preliminary note, we report the discovery of small amber fragments in three different stratigraphic levels along the core. This finding allows us to expand the knowledge about the amber in the Bolca Lagerstätten and supports the hypothesis of correlation between the resin essudation and the beginning of the cooling following the Early Eocene Climatic Optimum (EECO)
Piante fossili di Monte Bolca
No full textElenco di piante fossili di Monte Bolca.
La datazione è desunta da una nota finale dell\u27assistente al Museo di Storia naturale speciale Antonio Frasson il quale ha consegnato le piante fossili in assenza del prof. Molin al prof. De Visiani.
Manoscritto. 5 c; 340 mm
Geological and stratigraphical setting of the Bolca area
No full textDescription of the stratigraphy and geological setting of the Bolca area with its famous fossiliferous sites, located in the eastern part of the Lessini Mountains of the Southern Alps
A morphospace for the Eocene fish assemblage of Bolca, Italy: A window into the diversification and ecological rise to dominance of modern tropical marine fishes
No full textThe celebrated Eocene fishes of Bolca, northeastern Italy, provide one of the earliest evidence of a modern tropical shallow marine fish assemblage, in the aftermath of the end-Cretaceous extinction. This fish assemblage has been traditionally interpreted as closely linked to a coral reef system based on a certain similarity in taxonomic composition with modern ecosystems. In this study, we use geometric morphometrics to compare the patterns of morphospace occupation and morphological variation between Eocene and extant tropical shallow water fish assemblages. Morphospace analysis revealed that there are not significant differences in morphospace occupation, and the Eocene fish assemblage shows a greater frequency of deep-bodied morphotypes and a higher morphological disparity compared to the extant tropical marine shallow-water assemblages. Because of the highly reduced reef-building potential of early Eocene coral communities and the extremely scarce evidence of corals in the Bolca area, the broad morphospace occupation and the high morphological richness observed for the Bolca assemblage suggest that an Eocene tropical non-coral reef setting shows higher, or at least similar, morphological diversity than modern coral reef-associated fish assemblages. Therefore, our paleontological evidence suggests that coral reefs may have played a secondary role in shaping the morphological richness of these fossil and extant tropical marine fish assemblages, and are consistent with the hypothesis of the rapid niche-filling and early saturation of the teleost morphospace after the end-Cretaceous extinction
A historical overview of the reptile fauna from the Eocene Bolca Fossil-Lagerstätte (Italy)
No full textThe Eocene fossil reptiles from the Bolca Fossil-Lagerstätte (Verona, Italy) have been known in the literature since at least the 1850’ and were the subject of many studies during the second half of the XIX century and the first decades of the XX century. However, with the exception of a few papers, only rare works have been published on the Monte Bolca herpetofauna in recent years, and in many cases knowledge of the anatomy, taxonomy, and proper nomenclature of the Bolca reptiles still remains uncertain. Herein, we reassess the history of the discoveries, the earlier taxonomy and revisions of the crocodilians, turtles, and snakes from Bolca. To date, a total of 13 crocodilian specimens have been described in the literature or are housed in museum collections and remain unpublished. Two of the crocodilian specimens formerly cited and/or described are currently lost. All the fossil crocodilian specimens had originally been referred to two species, Crocodilus vicetinus Lioy, 1865, and Crocodilus bolcensis Sacco, 1895. In this study these identifications are considered invalid, and some specimens are referred to the genera Asiatosuchus, Boverisuchus, Diplocynodon and Hassiacosuchus while assignment at species level is still debatable. The turtles are represented by multiple specimens, which had been referred in the past to several different taxa of pleurodires and trionychids. However, only two species of turtles from Monte Bolca are currently accepted as being valid, both with species epithets dedicated to the renowned Italian palaeontologist Giovanni Capellini (1833-1922): the pleurodire Neochelys capellinii (de Zigno, 1890), which is the type species of its genus, and the trionychid “Trionyx” capellinii Negri, 1892. Both the crocodilians and the turtles had been collected at the Purga di Bolca locality. Only three snake specimens have been described from the Bolca area, representing also the oldest Cenozoic snakes from Italy: Coluber ombonii de Zigno, 1889 from Purga, and the archaeophiine Archaeophis proavus Massalongo, 1859 and anomalophiid Anomalophis bolcensis (Massalongo, 1859) from the Pesciara locality. The affinities of C. ombonii are still not clear, whereas A. proavus and A. bolcensis are considered valid and represent the type species of their genera but also are among the very few representatives of Archaeophiinae and Anomalophiidae respectively. The fossil reptiles from Bolca are housed in public collections in Italy (Turin, Verona, Padua, Rome, Pavia), the United Kingdom (London), USA (Pittsburgh, Cambridge), Germany (Darmstadt, Berlin) and Austria (Vienna)
Patrimonio culturale e transizione digitale. Tattiche per una comunicazione consapevole
No full textThis paper reflects on the changes that digital technologies are bringing to the communication, conservation and management of cultural heritage. Starting from the project “The Galla Placidia Line” regarding a military landscape along the Adriatic coast, the authors intend to describe this ongoing research experience and contextualize it in the international panorama, focusing on the role of ICTs for a conscious communication of a widespread and dissonant heritage
FIG. 1 in Skin nodules in fossil fishes from Monte Bolca (Eocene, Northern Italy)
No full textFIG. 1. — Skin nodules in Exellia (= Semiophorus) velifer (Volta, 1796) (Bol 81): A, general view; B-D, details. Scale bars: A, C, 1 cm; B, D, 1 mm.Published as part of Petit, Gilles, 2010, Skin nodules in fossil fishes from Monte Bolca (Eocene, Northern Italy), pp. 157-163 in Geodiversitas 32 (1) on page 159, DOI: 10.5252/g2010n1a5, http://zenodo.org/record/468829
Polveri, salute e conservazione del patrimonio culturale: il caso di studio del MANN di Napoli
No full textAir quality inside buildings is a measure of inner environment healthiness and comfort of the occu-pants. It is influenced by the presence of suspended particles, gas and contaminants. Typically, dust can reach culture sites by means of visitors, deposited on shoes and clothing, or through ventilation systems. Environmental and microclimatic parameters relating to the presence of dust in places of culture have to be evaluated in relation to comfort and health of people, but also in relation to the conservation of heritage materials. As part of this study, it was carried out a dust monitoring of the Tyrannicides hall, an exhibition space for stone statues in the National Archaeological Museum of Naples (MANN). On the statues in the hall have been analyzed localized chromatic alterations due to dust. The monitoring made it possible to verify quantity and type of dust in the environment. The effects and implications of an innovative technological strategy for the conservation of cultural heritage were also evaluated
Alveolina postalensis n. sp. (Foraminiferida, Alveolinidae) from the upper Ypresian of Monte Postale and Pesciara di Bolca (Northern Italy).
No full textA new species of the genus Alveolina, Alveolina postalensis n. sp., is herein described from the Monte Postale and Pesciara di Bolca sites (northern Italy). Our biometric data allow us to distinguish this species from the related Alveolina croatica Drobne, 1977, A. levantina Hottinger, 1960, and A. hottingeri Drobne, 1977. We hypothesise that Alveolina postalensis n. sp. could be the ancestor of A. croatica and that A. postalensis n. sp. and A. levantina could share a common ancestor. Based on the larger foraminiferal assemblage co-occurring with the new taxon, we can ascribe Alveolina postalensis n. sp. to the SB11 Zone (middle Cuisian, upper Ypresian, lower Eocene)
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