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Dynamic climate and ecological expansion drive body morphology evolution in fossil and extant neocoleoid cephalopods.
Communications Biology · · Journal Article · Open access
Wang, Fang + more
Abstract ↗AI summary
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Sea surface temperature and ecological factors are linked to evolutionary rates and morphological disparity in neocoleoid cephalopods across ~490 million years, with post-Cretaceous conditions showing elevated rates.
- Why it matters: Morphological diversification in cephalopods is extensive, but the macroevolutionary timing and environmental/ecological drivers behind it remain unclear.
- What they did: The study built a time-calibrated phylogeny for fossil and extant neocoleoid cephalopods and quantified evolutionary rates and morphological disparity over ~490 million years, testing links to climate and ecological variables.
- The result: Morphological diversification shows five peaks, disparity responds with a time lag to rate shifts, major perturbations (end-Permian, end-Triassic, Early Triassic, Toarcian) align with reduced rates, and post-Cretaceous conditions align with elevated rates via ecological release and adaptive radiation.
The findingWhy it mattersWhat they didThe result
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