Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia
The Early Cretaceous of Colombia presents a rich, abundant, and well-preserved fossil vertebrate record of marine reptiles related to the Alto Ricaurte Marine Reptile Lagerstätte. However, despite the growing number of studies on soft tissue preservation worldwide in recent years, few have explored...
- Autores:
-
Martinez Motta, Manuel Francisco
- Tipo de recurso:
- Trabajo de grado de pregrado
- Fecha de publicación:
- 2025
- Institución:
- Universidad de los Andes
- Repositorio:
- Séneca: repositorio Uniandes
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.uniandes.edu.co:1992/75501
- Acceso en línea:
- https://hdl.handle.net/1992/75501
- Palabra clave:
- Paja formation
Marine reptile lagerstätte
Ichthyosaur
Soft tissues
Geociencias
- Rights
- License
- https://repositorio.uniandes.edu.co/static/pdf/aceptacion_uso_es.pdf
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| dc.title.eng.fl_str_mv |
Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia |
| title |
Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia |
| spellingShingle |
Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia Paja formation Marine reptile lagerstätte Ichthyosaur Soft tissues Geociencias |
| title_short |
Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia |
| title_full |
Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia |
| title_fullStr |
Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia |
| title_full_unstemmed |
Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia |
| title_sort |
Recognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia |
| dc.creator.fl_str_mv |
Martinez Motta, Manuel Francisco |
| dc.contributor.advisor.none.fl_str_mv |
Cadena Rueda, Edwin Alberto Noe, Leslie Francis |
| dc.contributor.author.none.fl_str_mv |
Martinez Motta, Manuel Francisco |
| dc.contributor.jury.none.fl_str_mv |
Eickmann, Benjamin |
| dc.subject.keyword.eng.fl_str_mv |
Paja formation Marine reptile lagerstätte Ichthyosaur Soft tissues |
| topic |
Paja formation Marine reptile lagerstätte Ichthyosaur Soft tissues Geociencias |
| dc.subject.themes.spa.fl_str_mv |
Geociencias |
| description |
The Early Cretaceous of Colombia presents a rich, abundant, and well-preserved fossil vertebrate record of marine reptiles related to the Alto Ricaurte Marine Reptile Lagerstätte. However, despite the growing number of studies on soft tissue preservation worldwide in recent years, few have explored this remarkable preservation in this region. This study aims to identify and characterize the potentially preserved soft-tissue remains in the ichthyosaur specimen CIP-0107, addressing the question of how the taphonomic conditions of the Paja Formation contributed to exceptional soft-tissue preservation. In this context, samples of an Aptian ichthyosaur from the Paja Formation of Colombia were analyzed using techniques such as EDTA demineralization, thin section preparation, transmitted and polarized light microscopy, SEM-EDS, and ATR-FTIR spectroscopy. These analyses revealed net-like structures interpreted as potential keratinized epithelium in the stratum spinosum of epidermis, and skin-like tissues. The findings indicate preservation facilitated by rapid burial in “soupy” sediments, microbial activity, and dysoxic-anoxic marine conditions, and highlights the potential of Colombia as a key region for paleontological studies. |
| publishDate |
2025 |
| dc.date.accessioned.none.fl_str_mv |
2025-01-20T19:32:30Z |
| dc.date.issued.none.fl_str_mv |
2025-01-20 |
| dc.date.accepted.none.fl_str_mv |
2025-01-20 |
| dc.date.available.none.fl_str_mv |
2026-01-30 |
| dc.type.none.fl_str_mv |
Trabajo de grado - Pregrado |
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info:eu-repo/semantics/bachelorThesis |
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info:eu-repo/semantics/acceptedVersion |
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http://purl.org/redcol/resource_type/TP |
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http://purl.org/coar/resource_type/c_7a1f |
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https://hdl.handle.net/1992/75501 |
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instname:Universidad de los Andes |
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reponame:Repositorio Institucional Séneca |
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instname:Universidad de los Andes reponame:Repositorio Institucional Séneca repourl:https://repositorio.uniandes.edu.co/ |
| dc.language.iso.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.references.none.fl_str_mv |
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Gaona-Narvaez, T., Maurrasse, F. J. M., & Etayo-Serna, F. (2013). Geochemistry, palaeoenvironments and timing of Aptian organic-rich beds of the Paja Formation (Curití, Eastern Cordillera, Colombia). Geological Society, London, Special Publications, 382(1), 31-48. Goldstein, J. I., Newbury, D. E., Michael, J. R., Ritchie, N. W., Scott, J. H. J., & Joy, D. C. (2018). Scanning electron microscopy and X-ray microanalysis. springer. Gómez-Pérez, M., & Noè, L. F. (2017). Cranial anatomy of a new pliosaurid Acostasaurus pavachoquensis from the Lower Cretaceous of Colombia, South America. Palaeontographica Abteilung A, 310, 5-42. Hampe, O. (1992). Ein großwüchsiger Pliosauride (Reptilia: Plesiosauria) aus-der Unterkreide (oberes Aptium) von Kolumbien. Courier Forschungsinstitut Senckenberg, 145, 1–25. IUGS [International Union of Geological Sciences]. (2022). The first 100 IUGS geological heritage sites. Edited and published by IUGS. Lee, Y. C., Chiang, C. C., Huang, P. Y., Chung, C. Y., Huang, T. D., Wang, C. C., Chen, C., Chang, R. S., Liao, C. H., & Reisz, R. R. (2017). Evidence of preserved collagen in an Early Jurassic sauropodomorph dinosaur revealed by synchrotron FTIR microspectroscopy. Nature communications, 8(1), 14220. Lindgren, J., Sjövall, P., Thiel, V., Zheng, W., Ito, S., Wakamatsu, K., Hauff, R., Kear, B. P., Engdahl, A., Alwmark, C., Eriksson, M. E., Jarenmark, M., Sachs, S., Ahlberg, P. E., Marone, F., Kuriyama, T., Gustafsson, O., Malmberg, P., Thomen, A., Rodríguez-Meizoso, I., Uvdal, P., Ojika, M., Schweitzer, M. H. (2018). Soft-tissue evidence for homeothermy and crypsis in a Jurassic ichthyosaur. Nature, 564, 359–365. Lingham-Soliar, T. (1999). Rare soft tissue preservation showing fibrous structures in an ichthyosaur from the Lower Lias (Jurassic) of England. Proceedings of the Royal Society of London. Series B: Biological Sciences, 266(1436), 2367-2373. Lingham‐Soliar, T. (2001). The ichthyosaur integument: skin fibers, a means for a strong, flexible and smooth skin. Lethaia, 34(4), 287-302. Lingham-Soliar, T. (2015). Integumental Taphonomy. In: The Vertebrate Integument Volume 2: Structure, Design and Function, 263-293. Lingham-Soliar, T., & Plodowski, G. (2010). The integument of Psittacosaurus from Liaoning Province, China: taphonomy, epidermal patterns and color of a ceratopsian dinosaur. Naturwissenschaften, 97, 479-486. Martill, D. M. (1988). Preservation of fish in the Cretaceous Santana Formation Brazil. Palaeontology, 31(1), 1–18. Martill, D. M. (1993). Soupy substrates: a medium for the exceptional preservation of ichthyosaurs of the Posidonia Shale (Lower Jurassic) of Germany. Kaupia, 2, 77-97. Martill, D. M. (1995). An ichthyosaur with preserved soft tissue from the Sinemurian of southern England. Palaeontology, 38(4), 897-904. Martin, T., Marugán-Lobón, J., Vullo, R., Martín-Abad, H., Luo, Z. X., & Buscalioni, A. D. (2015). 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Cadena Rueda, Edwin AlbertoNoe, Leslie Francisvirtual::22237-1Martinez Motta, Manuel FranciscoEickmann, Benjamin2025-01-20T19:32:30Z2026-01-302025-01-202025-01-20https://hdl.handle.net/1992/75501instname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/The Early Cretaceous of Colombia presents a rich, abundant, and well-preserved fossil vertebrate record of marine reptiles related to the Alto Ricaurte Marine Reptile Lagerstätte. However, despite the growing number of studies on soft tissue preservation worldwide in recent years, few have explored this remarkable preservation in this region. This study aims to identify and characterize the potentially preserved soft-tissue remains in the ichthyosaur specimen CIP-0107, addressing the question of how the taphonomic conditions of the Paja Formation contributed to exceptional soft-tissue preservation. In this context, samples of an Aptian ichthyosaur from the Paja Formation of Colombia were analyzed using techniques such as EDTA demineralization, thin section preparation, transmitted and polarized light microscopy, SEM-EDS, and ATR-FTIR spectroscopy. These analyses revealed net-like structures interpreted as potential keratinized epithelium in the stratum spinosum of epidermis, and skin-like tissues. The findings indicate preservation facilitated by rapid burial in “soupy” sediments, microbial activity, and dysoxic-anoxic marine conditions, and highlights the potential of Colombia as a key region for paleontological studies.Pregrado40 páginasapplication/pdfengUniversidad de los AndesGeocienciasFacultad de CienciasDepartamento de Geocienciashttps://repositorio.uniandes.edu.co/static/pdf/aceptacion_uso_es.pdfhttp://purl.org/coar/access_right/c_f1cf http://purl.org/coar/access_right/c_f1cfRecognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of ColombiaTrabajo de grado - Pregradoinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_7a1fTexthttp://purl.org/redcol/resource_type/TPPaja formationMarine reptile lagerstätteIchthyosaurSoft tissuesGeocienciasAlfonso-Rojas, A., & Cadena, E. A. (2020). 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Nature Communications, 15(1), 4063.202012622Publicationhttps://scholar.google.es/citations?user=gYgnH7QAAAAJvirtual::22237-1https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0001439204virtual::22237-168838014-e95b-41af-819e-1a5e692f3a9bvirtual::22237-168838014-e95b-41af-819e-1a5e692f3a9bvirtual::22237-1ORIGINALRecognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of Colombia.pdfRecognition and characterization of potential soft tissue from a fossil ichthyosaur found in the Early Cretaceous (Barremian - Aptian) of 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