Holcacephalus Resser 1938 (trilobite)

Trilobita - Ptychopariida - Norwoodiidae

Parent taxon: Norwoodiidae according to P. A. Jell and J. M. Adrain 2002

See also Sepkoski 2002

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

Subtaxa: none

Ecology: fast-moving low-level epifaunal suspension feeder

Distribution:

• Cambrian of Canada (1: Quebec collection), Kazakhstan (3), United States (15: Georgia, Pennsylvania, Texas, Wyoming)

Total: 19 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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