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May 16, 2026Earth and Environmental Science Transactions of the Royal Society of Edinburgh

Building the trilobite morphospace: the influence of different morphological structures

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Authors

EREnrique A. RANDOLFEFSFernanda SerraDBDiego Balseiro

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Overview

Randomized trial examines morphospace of trilobites, suggesting the need to analyze multiple structures for better insights.

Key Points

  • This research aims to explore how different morphological structures influence trilobite morphological disparity.
  • Analyzed geometric morphometric data from Silurian–Permian trilobites in the TriloMorph database.
  • Compared morphospaces derived from distinct structures, including outlines and internal features of cephala and pygidia.
  • Assessed correlations between morphospaces of cephalic and pygidial structures.
  • Cephalic outline captured much of the cephalic disparity but missed variability from internal structures.
  • Cephalic and pygidial morphospaces showed poor correlation, indicating unique aspects of biological variation for each tagma.
  • The analysis revealed a need for multi-structure methods to effectively capture trilobite morphological diversity.

Cite This Study

RANDOLFE et al. (2025) studied this question.

synapsesocial.com/papers/6a080a9fa487c87a6a40c809https://doi.org/10.1017/s1755691025100996
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Also Consider

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  1. 1Morphological disparity in Cambrian–Ordovician trilobite cephala and pygidia suggests functional canalization is taxonomically controlled2026
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  5. 5Modular reorganization of the trilobite <i>Lonchodomas chaziensis</i> demonstrates mosaic patterns of phenotypic change underlie metamorphosis2026