Macroevolutionary role reversals in the earliest radiation of bony fishes
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The evolution of jaws is hypothesized to have fueled radiations among vertebrates, contributing to their overwhelming success in the present day. Past work shows rapid early expansion of diversity in jaw structure in many lineages; however, the evolutionary dynamics underlying this pattern are unclear and hindered by the lack of a robust comparative framework. Here, using a macroevolutionary approach, we explore the diversification of lower jaws in early bony fishes, a major contributor to this initial radiation. Using newly generated three-dimensional mandibular shape data from 86 species, we find evidence of adaptive radiation in jaws during the earliest interval of bony fish evolutionary history (423-359 Ma.). These patterns are principally driven by early lungfishes and coelacanths, which display high rates of jaw diversification, rapid shifts into novel functional regions of trait space, as well as substantial innovation in jaw morphology and feeding ecology, standing in cont..., , , # Macroevolutionary role reversals in the earliest radiation of bony fishes
[https://doi.org/10.5061/dryad.z08kprrqf](https://doi.org/10.5061/dryad.z08kprrqf)
**1. Project Description:**
Evolutionary analysis of jaw shape in early Devonian bony fishes. This supplemental dataset contains supplemental Appendices 1 and a zipped folder of all R code and output needed to run the analysis within
**2. Contents:**
Appendix 1: Supplemental_Appendix_1.xlsx
Description: Spreadsheet file containing a list of species CT scanned, including institution, collection code, specimen number, where the model is archived, and stratigraphy information.
Appendix 2: R_code.zip
Description: Zipped folder containing all files and code needed to reproduce results from all R analyses
Folder 1 Name: BayesTraits
Folder 1 Description: Output from BayesTraits analyses. There are two subfolders (PC_analysis; pPC_analysis), each subfolder contains the output .txt files from BayesTraits analysis on PC data a...,
创建时间：
2025-09-02
