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Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia

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dc.creatorCadena, Edwin Alberto
dc.creatorAlfonso-Rojas, Andresspa
dc.date.accessioned2020-08-19T14:43:25Z
dc.date.available2020-08-19T14:43:25Z
dc.date.created2020-07-08spa
dc.description.abstractStudies of soft tissue, cells and original biomolecular constituents preserved in fossil vertebrates have increased greatly in recent years. Here we report preservation of ‘skin’ with chemical and molecular characterization from a three-dimensionally preserved caudal portion of an aspidorhynchid Cretaceous fish from the equatorial Barremian of Colombia, increasing the number of localities for which exceptional preservation is known. We applied several analytical techniques including SEM-EDS, FTIR and ToFSIMS to characterize the micromorphology and molecular and elemental composition of this fossil. Here, we show that the fossilized ‘skin’ exhibits similarities with those from extant fish, including the wrinkles after suffering compression stress and flexibility, as well as architectural and tissue aspects of the two main layers (epidermis and dermis). This similarity extends also to the molecular level, with the demonstrated preservation of potential residues of original proteins not consistent with a bacterial source. Our results show a potential preservation mechanism where scales may have acted as an external barrier and together with an internal phosphate layer resulting from the degradation of the dermis itself creating an encapsulated environment for the integument.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.7717/peerj.9479
dc.identifier.issnISSN: 2167-8359
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/27701
dc.language.isoengspa
dc.publisherPeerJspa
dc.relation.citationTitlePeerJ
dc.relation.ispartofPeerJ, ISSN: 2167-8359, (2020)spa
dc.relation.urihttps://peerj.com/articles/9479/spa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.sourcePeerJspa
dc.source.instnameinstname:Universidad del Rosario
dc.source.reponamereponame:Repositorio Institucional EdocUR
dc.subject.keywordAspidorhynchidaespa
dc.subject.keywordBarremianspa
dc.subject.keywordZapatocaspa
dc.subject.keywordSouth Americaspa
dc.subject.keywordSoft-tissuespa
dc.subject.keywordMolecular Paleontologyspa
dc.titleExceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombiaspa
dc.title.TranslatedTitle'Piel' excepcionalmente conservada en un pez colombiano del Cretácico Inferiorspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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