Data from: Review of Early Triassic Thylacocephala

Measurements for Early Triassic Thylacocephala from Madagascar (Dienerian/Smithian), Idaho &amp; Nevada including specimens of <em>Ankitokazocaris acutirostris</em> (7 specimens), <em>Ankitokazocaris triassica</em> (6 specimens), <em>Ligulacaris parisiana</em> (7 specimens) and <em>Paraostenia ambatolokobensis </em>(3 specimens). Script for descriptive statistics is also provided. Measurements were directly done on digital photographs with ImageJ2. When part and counter-part were available, measurements were done on both sides and then averaged.本数据集收录采自马达加斯加（迪内尔阶/史密斯阶）、美国爱达荷州与内华达州的早三叠世盾头亚纲（Thylacocephala）类群的测量数据，涵盖尖吻安基托卡里斯（*Ankitokazocaris acutirostris*）7件、三叠安基托卡里斯（*Ankitokazocaris triassica*）6件、巴黎舌形卡里斯（*Ligulacaris parisiana*）7件以及安巴托洛科本副奥斯坦虫（*Paraostenia ambatolokobensis*）3件标本。本数据集同时提供描述性统计分析脚本。所有测量均通过ImageJ2软件直接基于数码照片完成。若标本存在正反两面压型（即原模与副模），则分别对两侧进行测量后取平均值。