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Evidencia fósil de una antigua divergencia de loris y galagos
Erik R Seiffert1, Elwyn L Simons, Yousry Attia
1Department of Biological Anthropology and Anatomy, Duke University, and Division of Fossil Primates, Duke Primate Center, 1013 Broad Street, Durham, North Carolina 27705, USA. erik.seiffert@duke.edu
Nature
|March 28, 2003
Resumen
Los descubrimientos fósiles en Egipto revelan los strepsirrhinos de corona más antiguos conocidos, incluidos un galagid y un lorisid. Esto proporciona la primera fuerte evidencia fósil que apoya un antiguo origen afro-árabe para estos grupos de primates.
Área de la Ciencia:
- Paleontología Paleontología.
- Evolución de los Primates Evolución de los Primates
- Evolución de los mamíferos Evolución de los mamíferos
Sus antecedentes:
- Se supone que el origen de los primates estrepsirrinos de corona (lemures, loris, galagos) está en Afro-Arabia durante el Paleógeno temprano.
- A pesar de la extensa exploración paleontológica, la evidencia concluyente de fósiles de Afro-Arabia ha sido escasa.
Objetivo del estudio:
- Para describir las primeras coronas estrepsirrinas demostrables del Paleógeno afro-árabe.
- Proporcionar evidencia fósil que apoye la hipótesis de un antiguo origen afro-árabe para la corona Strepsirrhini.
Principales métodos:
- Análisis morfológico de fósiles de primates.
- Excavación y descubrimiento paleontológico en Egipto.
- Integración de datos biogeográficos.
Principales resultados:
- Descripción de un galagid y un posible lorisid del Eoceno medio tardío de Egipto.
- Identificación de la evidencia fósil más antigua para el peine de dientes estrepsirrhine en un lorisid.
- Aproximadamente duplicando el rango temporal conocido de los indiscutibles lorisiformes.
Conclusiones:
- Estos descubrimientos ofrecen el primer fuerte apoyo paleontológico para un antiguo origen afro-árabe de la corona Strepsirrhini.
- Los hallazgos sugieren una divergencia del Eoceno de las familias lorisiformes existentes.
- Los fósiles representan los strepsirrhinos de corona definitivos más antiguos de Afro-Arabia.
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