{"id":"RDUUNC_f76838576b9f446a4a2d41c13fcd9176","dc:title":"Data for: Extinction drives both expansion and contraction of morphological disparity in Trilobites","dc:creator":"Bignon, Arnaud","dc:date":"2025","dc:description":["Data files and R scripts for main and supplementary analysis. See README.txt for further details. Datos y scripts de R para los an\u00e1lisis principales y suplementarios. Ver README.txt para m\u00e1s detalles.","Among the many contributions of palaeontology to evolutionary biology, understanding the evolution of morphological diversity is one the most relevant. Disparity dynamics throughout the history of a clade have been widely explored in the fossil record, mostly by comparing taxonomic and morphological diversity. However, such comparisons reflect net diversification but fail to individualize extinction and origination rates, limiting our understanding of macroevolutionary processes. Here we analyse Cambrian\u2013Devonian trilobite disparity by integrating morphometric data with stratigraphic ranges from the Paleobiology Database. We generate time series for taxonomic and morphological diversity, extinction, and origination rates, and individualize the selectivity of extinction and origination relative to morphology using logistic regression. Our results show that net diversification alone does not explain disparity trends, as major increases in trilobite morphological diversity occur during intervals of stable taxonomic diversity. However, the selectivity of extinction and origination provides key insights into the underlying trends. A modified measure of the macroevolutionary influence of extinction and origination shows how these processes interact to shape disparity, producing increases and decreases individually. Notably, extinction emerges as the main driver of morphospace expansion and contraction in trilobites, challenging the classic view of extinction as a constraining factor for morphological evolution.","Entre las numerosas contribuciones de la paleontolog\u00eda a la biolog\u00eda evolutiva, la comprensi\u00f3n de la evoluci\u00f3n de la diversidad morfol\u00f3gica es una de las m\u00e1s relevantes. La din\u00e1mica de la disparidad a lo largo de la historia de un clado se ha explorado ampliamente en el registro f\u00f3sil, principalmente mediante la comparaci\u00f3n de la diversidad taxon\u00f3mica y morfol\u00f3gica. Sin embargo, estas comparaciones reflejan la diversificaci\u00f3n neta, pero no logran individualizar las tasas de extinci\u00f3n y originaci\u00f3n, lo que limita nuestra comprensi\u00f3n de los procesos macroevolutivos. Aqu\u00ed analizamos la disparidad de los trilobites del C\u00e1mbrico-Dev\u00f3nico integrando datos morfom\u00e9tricos con rangos estratigr\u00e1ficos de la Paleobiology Database. Generamos series temporales para la diversidad taxon\u00f3mica y morfol\u00f3gica, las tasas de extinci\u00f3n y originaci\u00f3n, e individualizamos la selectividad de la extinci\u00f3n y la originaci\u00f3n en relaci\u00f3n con la morfolog\u00eda utilizando regresiones log\u00edsticas. Nuestros resultados muestran que la diversificaci\u00f3n neta por s\u00ed sola no explica las tendencias de disparidad, ya que los principales aumentos en la diversidad morfol\u00f3gica de los trilobites se producen durante intervalos de diversidad taxon\u00f3mica estable. Sin embargo, la selectividad de la extinci\u00f3n y la originaci\u00f3n proporciona informaci\u00f3n clave sobre las tendencias subyacentes. Una medida modificada de la influencia macroevolutiva de la extinci\u00f3n y la originaci\u00f3n muestra c\u00f3mo estos procesos interact\u00faan para dar forma a la disparidad, produciendo aumentos y disminuciones de forma individual. En particular, la extinci\u00f3n emerge como el principal impulsor de la expansi\u00f3n y contracci\u00f3n del morfoespacio en los trilobites, lo que desaf\u00eda la visi\u00f3n cl\u00e1sica de la extinci\u00f3n como factor limitante de la evoluci\u00f3n morfol\u00f3gica."],"dc:format":["text\/plain","application\/zip"],"dc:language":["eng"],"dc:type":"dataset","dc:subject":["Macroevolution","Morphological disparity","Trilobites","Extinction","Selectivity","Macroevoluci\u00f3n","Disparidad morfol\u00f3gica","Extinci\u00f3n","Selectividad"],"dc:coverage":["ARG"],"dc:rights":["info:eu-repo\/semantics\/openAccess"],"dc:identifier":"https:\/\/repositoriosdigitales.mincyt.gob.ar\/vufind\/Record\/RDUUNC_f76838576b9f446a4a2d41c13fcd9176"}