Phillipsia (Griffithides) Portlock 1843 (trilobite)

Trilobita - Proetida - Proetidae

Alternative spelling: Griffithides

Full reference: J. E. Portlock. 1843. Report on the Geology of the County of Londonderry and of parts of Tyrone and Fermanagh 1-784

Parent taxon: Phillipsia according to Meek and Worthen 1870

See also Campbell and Engel 1963, Jell and Adrain 2002 and Sepkoski 2002

Sister taxa: Phillipsia aequalis, Phillipsia aliensis, Phillipsia dubia, Phillipsia eichwaldi, Phillipsia grandis, Phillipsia kojensis, Phillipsia najensis

Subtaxa: Griffithides (Griffithides) Griffithides (Metaphillipsia) Griffithides convexicaudatus Griffithides pustulosus

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Ecology: fast-moving low-level epifaunal deposit feeder


• Permian of Ukraine (1 collection), United States (4: Alaska, California)

• Desmoinesian of United States (2: Kansas)

• Osagean of United States (3: Indiana, Kentucky)

• Carboniferous of Australia (1), Belgium (2), Canada (2: Alberta), the Czech Republic (1), France (1), Germany (3), Poland (1), the Russian Federation (1), Spain (1), the United Kingdom (13), United States (39: Alaska, Arizona, Indiana, Iowa, Kentucky, Nevada)

• Mississippian of United States (4: Alaska, Arizona)

Total: 79 collections including 85 occurrences

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