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

Studies 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 Cre...

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Fecha de publicación:
2020
Institución:
Universidad del Rosario
Repositorio:
Repositorio EdocUR - U. Rosario
Idioma:
eng
OAI Identifier:
oai:repository.urosario.edu.co:10336/27701
Acceso en línea:
https://doi.org/10.7717/peerj.9479
https://repository.urosario.edu.co/handle/10336/27701
Palabra clave:
Aspidorhynchidae
Barremian
Zapatoca
South America
Soft-tissue
Molecular Paleontology
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License
Abierto (Texto Completo)
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spelling 88235006600f8b9c50a-f8ef-4dd4-aa58-9d9130893f0f2020-08-19T14:43:25Z2020-08-19T14:43:25Z2020-07-08Studies 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.application/pdfhttps://doi.org/10.7717/peerj.9479ISSN: 2167-8359https://repository.urosario.edu.co/handle/10336/27701engPeerJPeerJPeerJ, ISSN: 2167-8359, (2020)https://peerj.com/articles/9479/Abierto (Texto Completo)http://purl.org/coar/access_right/c_abf2PeerJinstname:Universidad del Rosarioreponame:Repositorio Institucional EdocURAspidorhynchidaeBarremianZapatocaSouth AmericaSoft-tissueMolecular PaleontologyExceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia'Piel' excepcionalmente conservada en un pez colombiano del Cretácico InferiorarticleArtículohttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_6501Cadena, Edwin AlbertoAlfonso-Rojas, AndresORIGINALpeerj-9479.pdfapplication/pdf1939295https://repository.urosario.edu.co/bitstreams/c3bb9f35-f5a2-4951-917a-03599d7260e2/download525c7134d686e4e2202519f3d3831bacMD51TEXTpeerj-9479.pdf.txtpeerj-9479.pdf.txtExtracted texttext/plain57406https://repository.urosario.edu.co/bitstreams/027605e2-c317-4e40-b28d-dd8f31dde7f3/download4883044e9c8fb7dfb7a3b5dfc0d673d6MD52THUMBNAILpeerj-9479.pdf.jpgpeerj-9479.pdf.jpgGenerated Thumbnailimage/jpeg4515https://repository.urosario.edu.co/bitstreams/87eb552f-f06e-4c99-9842-c69f8b61d0ab/downloade1254f32ada36f72c9bd9b72679ae59bMD5310336/27701oai:repository.urosario.edu.co:10336/277012022-05-05 16:21:23.231https://repository.urosario.edu.coRepositorio institucional EdocURedocur@urosario.edu.co
dc.title.spa.fl_str_mv Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia
dc.title.TranslatedTitle.spa.fl_str_mv 'Piel' excepcionalmente conservada en un pez colombiano del Cretácico Inferior
title Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia
spellingShingle Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia
Aspidorhynchidae
Barremian
Zapatoca
South America
Soft-tissue
Molecular Paleontology
title_short Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia
title_full Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia
title_fullStr Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia
title_full_unstemmed Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia
title_sort Exceptionally preserved ‘skin’ in an Early Cretaceous fish from Colombia
dc.subject.keyword.spa.fl_str_mv Aspidorhynchidae
Barremian
Zapatoca
South America
Soft-tissue
Molecular Paleontology
topic Aspidorhynchidae
Barremian
Zapatoca
South America
Soft-tissue
Molecular Paleontology
description Studies 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.
publishDate 2020
dc.date.accessioned.none.fl_str_mv 2020-08-19T14:43:25Z
dc.date.available.none.fl_str_mv 2020-08-19T14:43:25Z
dc.date.created.spa.fl_str_mv 2020-07-08
dc.type.eng.fl_str_mv article
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dc.type.spa.spa.fl_str_mv Artículo
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https://repository.urosario.edu.co/handle/10336/27701
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language eng
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