Table S1. Uncorrected p distance matrix

Uncorrected p distance values for combined COI and 16S sequences from phylogenetic analysis of <em>Helminthoglypta</em> land snails (Mollusca: Gastropoda: Helminthoglyptidae) from northern California and southern Oregon, USA. Note: Specimen numbers marked with * were missing COI sequences. Table in both Excel (*.xlsx) and comma-separated value (*.csv) formats.本数据集收录了美国加利福尼亚州北部与俄勒冈州南部陆生蜗牛<em>Helminthoglypta</em>（软体动物门：腹足纲：Helminthoglyptidae科）的系统发育分析所用联合COI（细胞色素c氧化酶亚基I）与16S序列的未校正p距离值。注意：带有*标记的标本编号对应的样品缺失COI序列。该数据集的表格文件同时提供Excel（*.xlsx）与逗号分隔值（*.csv）两种格式。