Micragnostus Howell, 1935a

Taylor, John F., Loch, James D. & Repetski, John E., 2024, Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia, Zootaxa 5422 (1), pp. 1-66 : 53

Micragnostus Howell, 1935a

Type species. Agnostus calvus Lake, 1906 , by original designation, from Wales .

Discussion. Several specimens in collection 5/22/08B represent one or more genera of a problematic group of similar agnostoids with rather generalized cephala and strongly convex pygidial axes that includes, among others, Homagnostus , Micragnostus , Oncagnostus and Trilobagnostus . The amount of material from the Windfall is too limited to add anything to recent efforts to identify diagnostic apomorphic traits that will improve the consistency of assignment of species to these closely related genera (e.g., Choi et al., 2004; Westrop & Eoff, 2012).