Trilobita - Agnostida - Agnostidae

Full reference: C. E. Resser. 1939. The Spence Shale and its fauna. Smithsonian Miscellaneous Collections 97(12):1-29

Belongs to Agnostus according to C. E. Resser 1939

Sister taxa: Agnostus artilimbatus, Agnostus babcocki, Agnostus bonnerensis, Agnostus captiosus, Agnostus neglectus, Agnostus rakuroensis, Agnostus valentinus

Type specimen: USNM 96500

Ecology: nektobenthic suspension feeder