Upper Cretaceous Enchodontidae (Actinopterygii: Aulopiformes) in the La Luna formation, Eastern Cordillera, Colombia: A new report

The fossil record of Upper Cretaceous fishes in Colombia is particularly scarce, with only eleven previously identified species. This study presents the first comprehensive report of the extinct aulopiform fish family Enchodontidae from the Eastern Cordillera of Colombia. Fieldwork in the municipality of Matanza (Santander Department) yielded five fossil specimens, including jaw and skull fragments. These specimens were collected from the Upper Cretaceous La Luna Formation and were described and examined to approximate their taxonomic affinity, depositional environment , and geological age. Detailed morphological analyses associate these new specimens with the genus Enchodus . Our findings provide new data that contribute to the understanding of Enchodus diversity and distribution. The presence of key diagnostic characters in our specimens aligns with established phylogenetic frameworks, while further highlighting the potential for the presence of new species within this record. Resumen El registro fósil de peces del Cretácico Superior en Colombia es notablemente escaso, con solo once especies previamente identificadas. Este estudio presenta el primer registro de la familia de peces extintos Enchodontidae para la Cordillera Oriental de Colombia. El trabajo de campo en el municipio de Matanza (Departamento de Santander) produjo cinco especímenes fósiles, incluidos fragmentos de mandíbulas y cráneos. Estos especímenes fueron recolectados de la Formación La Luna del Cretácico Superior y analizados para establecer su afinidad taxonómica, ambiente de deposición y edad geológica. Los análisis morfológicos detallados asocian estos nuevos especímenes con el género Enchodus . Nuestros hallazgos aportan nuevos y valiosos datos que contribuyen a la comprensión de la diversidad y distribución de Enchodus . La presencia de caracteres diagnósticos clave en nuestros especímenes se alinea con las hipótesis filogenéticas establecidas, al tiempo que destaca el potential de nuevas especies dentro del registro aquí tratado. • This study reports Enchodus from the Upper Cretaceous La Luna Formation (Colombia). • This new Enchodus report consists of three Jaw fragments and a skull fragment. • Enchodus distribution. New correlation in Coniacian-Santonian age in Northern Andes.

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Journal
Journal of South American Earth Sciences
Published
2024-09-13
DOI
https://doi.org/10.1016/j.jsames.2024.105160
Primary Topic
Ichthyology and Marine Biology
Type
article
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article

Upper Cretaceous Enchodontidae (Actinopterygii: Aulopiformes) in the La Luna formation, Eastern Cordillera, Colombia: A new report

Germán David Patarroyo Camargo, José Manuel Torres-Parada, Johanset Orihuela, Carlos Mario Alarcón Gómez et al.
Journal of South American Earth Sciences
Ichthyology and Marine Biology
article

Upper Cretaceous Enchodontidae (Actinopterygii: Aulopiformes) in the La Luna formation, Eastern Cordillera, Colombia: A new report

Germán David Patarroyo Camargo, José Manuel Torres-Parada, Johanset Orihuela, Carlos Mario Alarcón Gómez, Juan Sebastián Gómez-Coronado, Jefferson Steeven Diaz Villamizar, José Javier Márquez Prada
article en

Abstract

The fossil record of Upper Cretaceous fishes in Colombia is particularly scarce, with only eleven previously identified species. This study presents the first comprehensive report of the extinct aulopiform fish family Enchodontidae from the Eastern Cordillera of Colombia. Fieldwork in the municipality of Matanza (Santander Department) yielded five fossil specimens, including jaw and skull fragments. These specimens were collected from the Upper Cretaceous La Luna Formation and were described and examined to approximate their taxonomic affinity, depositional environment , and geological age. Detailed morphological analyses associate these new specimens with the genus Enchodus . Our findings provide new data that contribute to the understanding of Enchodus diversity and distribution. The presence of key diagnostic characters in our specimens aligns with established phylogenetic frameworks, while further highlighting the potential for the presence of new species within this record. Resumen El registro fósil de peces del Cretácico Superior en Colombia es notablemente escaso, con solo once especies previamente identificadas. Este estudio presenta el primer registro de la familia de peces extintos Enchodontidae para la Cordillera Oriental de Colombia. El trabajo de campo en el municipio de Matanza (Departamento de Santander) produjo cinco especímenes fósiles, incluidos fragmentos de mandíbulas y cráneos. Estos especímenes fueron recolectados de la Formación La Luna del Cretácico Superior y analizados para establecer su afinidad taxonómica, ambiente de deposición y edad geológica. Los análisis morfológicos detallados asocian estos nuevos especímenes con el género Enchodus . Nuestros hallazgos aportan nuevos y valiosos datos que contribuyen a la comprensión de la diversidad y distribución de Enchodus . La presencia de caracteres diagnósticos clave en nuestros especímenes se alinea con las hipótesis filogenéticas establecidas, al tiempo que destaca el potential de nuevas especies dentro del registro aquí tratado. • This study reports Enchodus from the Upper Cretaceous La Luna Formation (Colombia). • This new Enchodus report consists of three Jaw fragments and a skull fragment. • Enchodus distribution. New correlation in Coniacian-Santonian age in Northern Andes.

Journal of South American Earth SciencesVol. 148
Universidad Industrial de Santander (CO), Florida International University (US), National University of San Juan (AR), Centro Científico Tecnológico - San Juan (AR), Ingeniería y Soluciones Informáticas (Spain) (ES), Colombian Geological Survey (CO)
Life below water
Openalex Percentile: Top 85%
Ichthyology and Marine Biology
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