Pachycranium Ross 1951 (trilobite)

Trilobita - Proetida - Hystricuridae

Full reference: R. J., J.r. Ross. 1951. Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas. Yale Peabody Museum of Natural History Bulletin 6:1-161

Parent taxon: Hillyardininae according to J. M. Adrain and S. R. Westrop 2007

See also Adrain et al. 2003 and Sepkoski 2002

Sister taxa: Hillyardina, Hyperbolochilus, Metabowmania, Tanybregma

Subtaxa: Pachycranium faciclunis

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Ecology: fast-moving low-level epifaunal deposit feeder


• Ordovician of Canada (2: Newfoundland collections), United States (6: Idaho, Utah)

Total: 8 collections including 9 occurrences

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Specimen images are retrieved through the ePANDDA API.

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