Supplementary Fig. 7. Morphospaces of early Pliensbachian ammonite species

Morphospaces of early Pliensbachian ammonite species. They correspond to principal component analyses based on the variance-covariance matrices of classical shell parameters (relative height (H / D), relative width (W / D), and relative umbilical diameter (U / D; see Brosse et al. 2013). The convex hulls delimitate species characterizing the NWE province (blue) and the MED province (orange). The MANOVA performed on the PCA scores for each morphospace indicates that there is no significant difference in the shell shape between NWE and MED species.

早普林斯巴阶菊石物种的形态空间。本数据集基于经典壳体参数的方差-协方差矩阵开展主成分分析（Principal Component Analysis, PCA），所采用的参数包括相对壳高（H/D）、相对壳宽（W/D）以及相对脐径（U/D；详见Brosse等2013年的研究）。其中凸包用于框定隶属于西北欧（Northwest Europe, NWE）生物地理省（以蓝色标识）与地中海（Mediterranean, MED）生物地理省（以橙色标识）的菊石物种。针对各形态空间的PCA得分开展的多元方差分析（Multivariate Analysis of Variance, MANOVA）结果显示，西北欧与地中海生物地理省的菊石壳体形态不存在显著差异。