Summary of within-lineage size trends across mass extinction intervals in invertebrate species or genera.

Only taxa that cross the extinction boundaries are considered.* described in the original reference as a ‘Lilliput effect’.aOther brachiopod species analysed in this study show varying trends prior to the Permo–Triassic boundary: two species decrease and two increase in size prior to the boundary. However, only the species listed in the above table cross over the Permo-Triassic boundary itself.bOther taxa show variable size trends in this study, but do not cross the boundary itself. Those that do cross the boundary might also show variable size trends leading up to or beyond the boundary, e.g. Passaloteuthis bisulcata significant increases in size at the start of the extinction interval.

本研究仅纳入跨越灭绝界线的分类单元。
* 该现象在原始参考文献中被描述为‘侏儒效应（Lilliput effect）’。
a. 本研究分析的其他腕足类物种在二叠纪-三叠纪界线（Permo–Triassic boundary）之前呈现出各异的体型变化趋势：其中2个物种体型减小，另有2个物种体型增大。但仅有上表所列物种真正跨越了二叠纪-三叠纪界线本身。
b. 本研究中的其他类群虽呈现出多变的体型变化趋势，但并未跨越该界线。跨越该界线的类群在界线前后同样可能存在体型变化波动，例如双沟箭石（Passaloteuthis bisulcata）在灭绝事件区间起始阶段出现了显著的体型增长。