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Article

Modular reorganization of the trilobite Lonchodomas chaziensis demonstrates mosaic patterns of phenotypic change underlie metamorphosis.

Evolution; international journal of organic evolution - 2 Apr 2026

Vargas-Parra Ernesto E, Hopkins Melanie J

Abstract excerpt

Some trilobites underwent drastic morphological transformations through their development. The Ordovician trilobite Lonchodomas chaziensis transformed, in a single molt, from a globular protaspid larva to a drastically different adult-like meraspid juvenile. This metamorphosis may be related to a complete shift in lifestyle from a free-floating planktic life mode into a bottom-dwelling benthic life mode. By...

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PMID: 41614959
DOI: 10.1093/evolut/qpag018

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