Abstract
Integration between systematic phylogenetics and palaeontological data has been probed to be an effective methodology to value palaeodiversities because it identifies periods in the evolutionary history of the clade without fossil representation. These are called ghost lineages. In this work we explore the possible relationship of ghost lineages duration with biometric, biogeografic or ecological variables in the Subfamily Caprinae (Bovidae, Mammalia). Variables were codified as binary characters and their relationship was examined using the concentrated-changes test. Our results indicate that species appearing in rainforest, warm temperate forest, taiga and desert biomes are related with high proportion of ghost lineages, while those from steppe biome present lower proportions. Zones inhabited by species of Caprinae in rainforest, warm temperate forest, taiga and desert are usually associated with high altitudes and a steep topography. Thus, we interpret that proportions in ghost lineages would be determined by probabilities of sedimentation and fossil site development .
Highlights
Integration between systematic phylogenetics and palaeontological data has been probed to be an effective methodology to value palaeodiversities because it identifies periods in the evolutionary history of the clade without fossil representation
Morales e introduce el concepto de «linaje fantasma» (Norell, 1992, 1993 1996) definido como los segmentos de historia evolutiva que sólo pueden ser descubiertos a través de análisis filogenéticos calibrados paleontológicamente
El uso de medias para cada especie en referencia a los linajes fantasma implica una reducción considerable de la independencia de los datos en este estudio, lo cual puede haber tenido consecuencias en los resultados finales
Summary
Integration between systematic phylogenetics and palaeontological data has been probed to be an effective methodology to value palaeodiversities because it identifies periods in the evolutionary history of the clade without fossil representation. Los linajes fantasma son definidos por Smith (1994) como ramas completas de un árbol evolutivo para las cuales no existe registro fósil conocido, pero cuya existencia hipotética se deriva de la tipología del árbol establecido en un análisis filogenético. Consideramos linaje fantasma la diferencia entre la edad del origen de cada rama del árbol filogenético y la edad del registro más antiguo conocido dentro de esa rama.
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