Polychelidan lobsters are unique decapod crustaceans characterized by having four or five pairs of claws. We still do not have a clear overview of the 69 described species of fossil polychelidans and,
Phylogenetic analysis: This folder contains the files used for reproduce the phylogenetic analyses. It contains the morphological matrix, an updated version of the matrix from Bravo et al., 2021 used
This upload contains the supplementary figures and tables, and the code and data for the paper: Kröger, B., Rojas, A. 2026. The aging of eco-genealogical units during the Phanerozoic. Paleobiology.
本数据集支持对多鳍龙科（Polycotylidae）演化历史的研究，包含多鳍龙科的系统发育分析、形态测量、生态数据及相关代码。数据覆盖其从早白垩世出现至晚白垩世的演化过程，涉及分类学、形态差异、生态特征等内容，为理解该类群的辐射、分化及灭绝提供基础数据。 论文“The evolutionary history of polycotylid plesiosaurians”
本数据集记录了侏罗纪至现代316种锥螺科腹足类的壳长数据，分析其体型演化模式与过程。包含体型与纬度的相关性、演化模式（随机游走或停滞）等研究结果，涉及标本数据、统计模型结果及可视化图表，共28个文件，支持生物演化领域的宏观分析。 San Jose State University（Carlie Pietsch团队）
