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Updated: Jul 12, 2026

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Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton
Published on: May 7, 2016
Esqueleto de diacodexis, el más antiguo artiodáctilo conocido
Resumen
El artiodáctilo más antiguo, Diacodexis, poseía adaptaciones de las extremidades para correr, similares a los primeros rumiantes. Este hallazgo desafía la idea de que Diacodexis es el antepasado de todos los artiodáctilos posteriores.
Área de la Ciencia:
- Paleontología Paleontología.
- Evolución de los mamíferos Evolución de los mamíferos
- Morfología Funcional Morfología Funcional.
Sus antecedentes:
- Diacodexis es el mamífero más antiguo conocido perteneciente al orden Artiodactyla.
- Comprender la anatomía postcraneal de Diacodexis es crucial para reconstruir la evolución temprana de los artiodáctilos.
Objetivo del estudio:
- Para describir el esqueleto casi completo del Eoceno temprano Diacodexis.
- Para analizar las adaptaciones postcraneales de Diacodexis.
- Para reevaluar la posición filogenética de Diacodexis dentro de las Artiodactyla.
Principales métodos:
- Descripción osteológica detallada de un esqueleto casi completo de Diacodexis.
- Análisis comparativo de la morfología de los elementos de las extremidades con los artiodáctilos existentes y extintos.
- Interpretación funcional de las características esqueléticas relacionadas con la locomoción.
Principales resultados:
- Diacodexis exhibe elementos delgados y alargados de las extremidades indicativos de la locomoción cursorial.
- Las adaptaciones postcraneales se alinean más estrechamente con los tragulidos y los rumiantes primitivos que con otros artiodáctilos.
- Las especializaciones esqueléticas sugieren una trayectoria evolutiva distinta de los linajes posteriores de artiodáctilos.
Conclusiones:
- Diacodexis poseía adaptaciones cursoriales avanzadas.
- Su morfología postcraneal desafía su papel como el antepasado directo de todos los artiodáctilos posteriores.
- La reevaluación de la filogenia temprana de los artiodáctilos está justificada en base a la anatomía de Diacodexis.
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