Supplementary Fig. 2. Correspondence analyses calculated made at the species/locality and clade/cluster levels for the western Tethys for each chronozone of the early Pliensbachian

Correspondence analyses made at the species/locality (A-C) and clade/cluster (D-E) levels for the western Tethys for each chronozone of the early Pliensbachian, in order to determine if the biogeographical partitioning detected at the species level still exists at the clade level. The polygons represent the 95% convex hull of the MED assemblages (in orange) and NWE assemblages (in blue). Eigenvalues are indicated for each axes. Only localities with at least 4 species and clusters with at least 3 clades are considered in these analyses.

本研究针对西特提斯洋域早普林斯巴阶的各个年代带，分别在物种/产地（A-C）与支系/聚类（D-E）两个层面开展对应分析，旨在检验在物种水平上检出的生物地理分区格局是否在支系水平上依然成立。图中多边形分别代表地中海（Mediterranean, MED）化石组合与西北欧（Northwest Europe, NWE）化石组合的95%凸包，前者以橙色标注，后者以蓝色标注。各坐标轴均标注了对应的特征值。本次分析仅纳入物种数量不少于4的产地以及支系数量不少于3的聚类。