107 research outputs found
Human footprints from Italy: the state of the art
The ichnological record of human traces from Italy is rich and quite diversified. In recent years, the development and dissemination of various methodologies and technological facilities has implemented the re-analysis of this record, enabling to reach different, sometimes deeper, interpretations favoured by the integration of external data, both geological and palaeontological. The oldest occurrence of the human ichnological record from Italy is represented by the Middle Pleistocene âDevilâs Trailsâ ichnosite in the âForestaâ area (Roccamonfina volcano, southern Italy), depicting human trackmakers trampling a pyroclastic flow deposit while descending a slope about 349 ka. Most of the record is Holocene in age and is constituted by the Upper Palaeolithic Grotta della BĂ sura site (Toirano, northern Italy, about 14 ky), the protohistoric sites of Afragola, Nola and Palma, the area of Pompei and the site of Aosta. The record is enriched by the ichnological evidences preserved in military structures of Trentino region (northern Italy) during the First World War. An updated report and discussion of these sites is here provided.Fil: Avanzini, Marco. Museo Delle Scienze di Trento; ItaliaFil: Citton, Paolo. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentina. Universidad Nacional de RĂo Negro. Sede Alto Valle. Instituto de Investigaciones en PaleobiologĂa y GeologĂa; ArgentinaFil: Mietto, Paolo. UniversitĂ di Padova; ItaliaFil: Panarello, Adolfo. UniversitĂ di Cassino e del Lazio Meridionale; ItaliaFil: Raia, Pasquale. UniversitĂ degli Studi di Napoli Federico II; ItaliaFil: Romano, Marco. UniversitĂ di Roma; ItaliaFil: Salvador, Isabella. Museo Delle Scienze di Trento; Itali
Dinosaur diversification linked with the Carnian Pluvial Episode
Dinosaurs diversified in two steps during the Triassic. They originated about 245 Ma, during the recovery from the Permian-Triassic mass extinction, and then remained insignificant until they exploded in diversity and ecological importance during the Late Triassic. Hitherto, this Late Triassic explosion was poorly constrained and poorly dated. Here we provide evidence that it followed the Carnian Pluvial Episode (CPE), dated to 234â232 Ma, a time when climates switched from arid to humid and back to arid again. Our evidence comes from a combined analysis of skeletal evidence and footprint occurrences, and especially from the exquisitely dated ichnofaunas of the Italian Dolomites. These provide evidence of tetrapod faunal compositions through the Carnian and Norian, and show that dinosaur footprints appear exactly at the time of the CPE. We argue then that dinosaurs diversified explosively in the mid Carnian, at a time of major climate and floral change and the extinction of key herbivores, which the dinosaurs opportunistically replaced
2001-2021: Ventâanni di ricerche sulle âCiampate del diavoloâ. Dalla leggenda alla realtĂ scientifica
Update of ichnofaunal units and link with footprint biochrons in the late Palaeozoic to early Mesozoic of the Southern Alps: towards a better correlation with the marine realm
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THE PRATI DI STUORES/STUORES WIESEN SECTION (DOLOMITES, ITALY): A CANDIDATE GLOBAL STRATOTYPE SECTION AND POINT FOR THE BASE OF THE CARNIAN STAGE
The Prati di Stuores/Stuores Wiesen section (Dolomites, Italy) is proposed as a candidate Global Stratotype Section and Point for the base of the Carnian Stage. In addition to being a famous, richly fossiliferous locality, it includes the type-section of the Cordevolian substage. The section is located near PralongiĂ , along the southern slope of the crest separating the Badia/Abtei and Cordevole valleys. Below the levels with Trachyceras aon, the section contains a rich ammonoid fauna that chacterizes the lower part of the Regoledanus Subzone and subsequently records the first appearances of the mid-high latitude genus Daxatina (Daxatina sp., D. cf. canadensis) and of traditional Trachyceras with species different from T. aon. Moreover, the Daxatina cf. canadensis Subzone is recognised above the Regoledanus Subzone. Very rare conodonts of the Budurovignatus group and species of Gladigondolella from the diebeli Assemblage Zone occur. Gondolella polygnatyformis, already known from the Aon Subzone, is absent. Palynomorphs, foraminifers, gastropods, bivalves, brachiopods, microcrinoids and holothurian sclerites were studied. Variations in frequency and taxonomic diversity of these faunas suggest anaerobic-disaerobic bottom conditions for the lower-middle part of the section (0-105 m), followed by a more stable oxygen content in the upper portion. Magnetostratigraphy showed four intervals with normal polarity and three intervals with reversed polarity. The Daxatina cf. canadensis Subzone falls close to the normal polarity interval S2n. The present study proposes the FAD of the cosmopolitan genus Daxatina as a marker of the base of the Carnian Stage, placing it at a lower stratigraphic level than previously indicated in the Stuores area. The Prati di Stuores section is proposed as GSSP of the Ladinian-Carnian boundary. 
Updated Italian Tetrapod Ichnology Reference List
We provide a list of contribution by Italian scientists to tetrapod ichnology with papers on both material
from Italy and abroad. Foreign authorâs contributions on tetrapod ichnology based on material from Italy are also
considered. The list updates the previous one published by DâOrazi Porchetti et al. (2008) and, as a result, includes works from 1869 up to now. Following the previous reference list, papers of non-Italian researchers on foreign material are reported when the material was found on Italian territory at the time of publication
First evidence of stegosaurian deltapodus footprints in North Africa (IouaridĂšne formation, Upper Jurassic, Morocco)
AMMONITI NELLA PIATTAFORMA LIASSICA VENETA
Three specimens of Ammonites have been newly found in the Calcari Grigi Fm. (Lower and Middle Liassic). At present the total amount of known Ammonite specimens in the western part of the Venetian Liassic Carbonate Platform is at least of six.
The occurrence of Ammonites ln an unfavourable environment suggests a postâmortem transport from the adjacent Lombardian Basin
Revisione dei molluschi appartenenti alla Collezione "Dal Lago" - Valdagno e studio geologico comparativo delle localitĂÂ fossilifere luteziane di Rivagra e Grola in Valle dell'Agno.
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