Data to "Evidence for the evolution of eusociality in stem ants and a systematic revision of †Gerontoformica (Hymenoptera: Formicidae)" published in Zoological Journal of the Linnean Society

These are the µCT Datasets used in the study "Evidence for the evolution of eusociality in stem ants and a systematic revision of †<em>Gerontoformica</em> (Hymenoptera: Formicidae)" published in the Zoological Journal of the linnean society.<br> In the study, an amber piece containing 4 specimens of the stem ant genus †<em>Gerontoformica </em>was investigated, one of them being a pupa belonging to †<em>G. gracilis</em> (CASENT0741231), one adult belonging to †<em>G. gracilis</em> (CASENT0741232) and two adults of the newly described species †<em>G. sternorhabda</em> (CASENT0741233 and CASENT0741234). The adult specimen of †<em>G. gracilis</em> (CASENT0741232) had exception internal preservation, so higher magnification scans for anatomical details were performed. The dataset includes full body scans of all of these individuals, adjusted datasets in which the adult specimens were segmented out of the amber matrix (used for the volume renderings in the article) and the two head focused scans of †<em>G. gracilis</em> (CASENT0741232). The scanning parameters can be taken from the uploaded Scans Metadata Excel file, which is also part of the supplementary material of the related article. The two adult scans of †<em>G. sternorhabda</em> (CASENT0741233 and CASENT0741234) are in DICOM file format, all other data are in TIFF image format.本数据集为发表于《林奈学会动物学杂志》（Zoological Journal of the Linnean Society）的研究《茎蚁真社会性演化的证据及†<em>始猛蚁属</em>（†<em>Gerontoformica</em>，膜翅目：蚁科）系统学修订》中所使用的显微CT（µCT）数据集。 该研究对一枚包含4件茎蚁类群†<em>始猛蚁属</em>标本的琥珀样品展开了研究，其中1件为†<em>G. gracilis</em>的蛹（标本编号CASENT0741231）、1件为†<em>G. gracilis</em>的成虫（标本编号CASENT0741232），另有2件为新描述物种†<em>G. sternorhabda</em>的成虫（标本编号分别为CASENT0741233与CASENT0741234）。 †<em>G. gracilis</em>成虫标本（CASENT0741232）的内部保存状况优异，因此针对其解剖学细节开展了高放大倍率扫描。 本数据集包含所有标本的全身扫描数据、从琥珀基质中分割提取成虫个体的调整后数据集（用于论文中的体绘制可视化），以及针对†<em>G. gracilis</em>成虫（CASENT0741232）的2件头部聚焦扫描数据。 扫描参数可参见上传的《扫描元数据》Excel文件，该文件亦属于相关论文的补充材料。 †<em>G. sternorhabda</em>的2件成虫扫描数据（CASENT0741233与CASENT0741234）采用DICOM文件格式，其余所有数据均采用TIFF图像格式。