English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/147145
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Dietary and environmental implications of Early Cretaceous predatory dinosaur coprolites from Teruel, Spain

AuthorsVajda, Vivi; Pesquero, María Dolores ; Villanueva-Amadoz, Uxue; Lehsten, Veiko; Alcalá, Luis
KeywordsCoprolite
Teruel
Palynology
Charcoal
Wild fires
Cretaceous
Issue Date15-Dec-2016
PublisherElsevier
CitationPalaeogeography, Palaeoclimatology, Palaeoecology 464: 134-142 (2016)
AbstractCoprolites from the Early Cretaceous vertebrate bone-bed at Ariño in Teruel, Spain, were analyzed geochemically and palynologically. They contain various inclusions, such as small bone fragments, abundant plant remains, pollen, and spores. We attribute the coprolites to carnivorous dinosaurs based partly on their morphology together with the presence of bone fragments, and a high content of calcium phosphate (hydroxylapatite) with calcite. Well-preserved pollen and spore assemblages were identified in all coprolite samples and a slightly poorer assemblage was obtained from the adjacent sediments, both indicating an Early Cretaceous (Albian) age. This shows that the coprolites are in situ and also confirms previous age determinations for the host strata. The depositional environment is interpreted as a continental wetland based on the palynoflora, which includes several hydrophilic taxa, together with sparse occurrences of fresh-water algae, such as Ovoidites, and the absence of marine palynomorphs. Although the coprolites of Ariño samples generally are dominated by pollen produced by Taxodiaceae (cypress) and Cheirolepidiaceae (a family of extinct conifers), the sediment samples have a slightly higher relative abundance of fern spores. The distribution of major organic components varies between the coprolite and sediment samples, which is manifest by the considerably higher charcoal percentage within the coprolites. The high quantities of charcoal might be explained by a ground-dwelling species, feeding on smaller vertebrates that complemented its diet with plant material from a paleoenvironment were wild fires were a part of the ecosystem. The state of preservation of the spores and pollen is also more detailed in the coprolites, suggesting that encasement in calcium phosphate may inhibit degradation of sporopollenin.
URIhttp://hdl.handle.net/10261/147145
DOI10.1016/j.palaeo.2016.02.036
Identifiersdoi: 10.1016/j.palaeo.2016.02.036
issn: 0031-0182
Appears in Collections:(MNCN) Artículos
Files in This Item:
File Description SizeFormat 
palaeo3-464_134–142(2016).pdf1,54 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.