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September 28, 2025

Extinction drives both expansion and contraction of morphological disparity in trilobites.

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Authors

DBDiego BalseiroFSFernanda SerraABArnaud Bignon

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Overview

Analysis reveals extinction drives morphological disparity in trilobites, highlighting macroevolutionary impacts.

Key Points

  • Extinction is identified as a primary driver of morphological disparity in trilobites, shaping their evolution.
  • Key metrics show that major increases in morphological diversity occur during periods of stable taxonomic diversity.
  • Using logistic regression, extinction and origination rates were individualized to analyze disparities over time.
  • Understanding trilobite morphology further challenges conventional views of extinction's role in evolution.

Cite This Study

Balseiro et al. (2025) studied this question.

synapsesocial.com/papers/68d913ab4ddcf71ba560bd9fhttps://doi.org/10.1098/rspb.2025.1418
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Morphological disparity in Cambrian–Ordovician trilobite cephala and pygidia suggests functional canalization is taxonomically controlled2026
  2. 2Heterogeneous selectivity and morphological evolution of marine clades during the Permian–Triassic mass extinction2024 · 17 citations
  3. 3Building the trilobite morphospace: the influence of different morphological structures2025
  4. 4Rebuilding the taxonomic tree structure after a major mass extinction: a case study on taxonomic distinctness of marine Triassic bivalves2026
  5. 5Exploring changes in trilobite provincialism across the Cambrian redlichiid-olenellid extinction2026 · 1 citations