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dc.contributor.author
Romano, Marco  
dc.contributor.author
Citton, Paolo  
dc.contributor.author
Cipriani, Angelo  
dc.contributor.author
Fabbi, Simone  
dc.date.available
2020-02-18T17:57:53Z  
dc.date.issued
2018-02  
dc.identifier.citation
Romano, Marco; Citton, Paolo; Cipriani, Angelo; Fabbi, Simone; First report of hybodont shark from the toarcian rosso ammonitico formation of umbria-marche apennine (polino area, terni, central Italy); Societa Geologica Italiana; Italian Journal of Geosciences; 137; 1; 2-2018; 151-159  
dc.identifier.issn
2038-1719  
dc.identifier.uri
http://hdl.handle.net/11336/97916  
dc.description.abstract
In this contribution we present the first material referable to hybodont shark from the Rosso Ammonitico Formation (Umbria-Marche-Sabina Palaeogeographic Domain). Two teeth were recovered isolated within Toarcian red marly-limestone (Bifrons Zone). The best-preserved tooth is characterized by a general structure well in accord with the classic crushing dentition typical of hybodont sharks within the Subfamily Acrodontinae. The gently domed occlusal surface of the tooth does not show any trace of occlusal crest and of wrinkles, and is characterized by densely pitted, finely reticulated ornamentation. The available characters allow a conservative classification of the material at the genus level as Asteracanthus sp. The best-preserved tooth can be referred to the most mesial area of the first row of lateral teeth, using as a reference the holotype of Asteracanthus medius. The new material represents the earliest evidence of Asteracanthus and the second one from the whole Northern Apennines (Central Italy), throwing new light on the dispersal of the genus on the Jurassic Tethys.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Societa Geologica Italiana  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ASTERACANTHUS  
dc.subject
HYBODONT SHARK  
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PELAGIC CARBONATE PLATFORM  
dc.subject
TOARCIAN  
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UMBRIA-MARCHE-SABINA DOMAIN  
dc.subject.classification
Paleontología  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
First report of hybodont shark from the toarcian rosso ammonitico formation of umbria-marche apennine (polino area, terni, central Italy)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-10-15T17:30:14Z  
dc.journal.volume
137  
dc.journal.number
1  
dc.journal.pagination
151-159  
dc.journal.pais
Italia  
dc.journal.ciudad
Roma  
dc.description.fil
Fil: Romano, Marco. University of the Witwatersrand; Sudáfrica. Università degli studi di Roma "La Sapienza"; Italia  
dc.description.fil
Fil: Citton, Paolo. Università degli studi di Roma "La Sapienza"; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina  
dc.description.fil
Fil: Cipriani, Angelo. Università degli studi di Roma "La Sapienza"; Italia  
dc.description.fil
Fil: Fabbi, Simone. Istituto di Geologia Ambientale e Geoingegneria; Italia. Università degli studi di Roma "La Sapienza"; Italia  
dc.journal.title
Italian Journal of Geosciences  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.italianjournalofgeosciences.it/297/article-873/article.html  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3301/IJG.2018.01