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Xenocheilos Wilson 1949 (trilobite)

Trilobita - Ptychopariida - Norwoodiidae

PaleoDB taxon number: 21045

Parent taxon: Norwoodiidae according to P. A. Jell and J. M. Adrain 2003

Sister taxa: Hardyoides, Holcacephalus, Levisaspis, Norwoodella, Norwoodia, Paranorwoodia

Subtaxa: Xenocheilos minutum

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Ecology: fast-moving low-level epifaunal suspension feeder