PaleontologybioRxivPreprint
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A novel phylogenetic comparative model reveals strong signals for early high disparity in ichthyosaurs
Combining Early Burst and Ornstein-Uhlenbeck processes, an Early High Disparity model best fits ichthyosaur skull length across 108 phylogenies, placing median peak disparity at 231.1 Ma.
DOI 10.64898/2026.09.25.753454