Lingulata - Lingulida - Obolidae
Full reference: C. W. Walcott. 1908. Cambrian Brachiopoda: descriptions of new genera and species. Smithsonian Miscellaneous Collections 53(3):53-137
Parent taxon: Obolus according to C. W. Walcott 1908
See also Sepkoski 2002 and Williams et al. 2000
Sister taxa: Obolus (Broggeria), Obolus (Mickwitzella), Obolus acadica, Obolus apollinis, Obolus eichwaldi, Obolus ion, Obolus ismene, Obolus matinalis, Obolus mcconnelli, Obolus membranaceous, Obolus minimus, Obolus nundina, Obolus obscurus, Obolus parvus, Obolus pheres, Obolus prindlei, Obolus ruchini, Obolus shensiensis, Obolus smithi, Obolus tetonensis, Obolus virginiensis, Obolus wortheni
Subtaxa: Obolus (Fordinia) gilberti
Type: Obolus (Fordinia) perfectus
Ecology: stationary low-level epifaunal suspension feeder
Distribution: found only at South of Marjum Pass (Cambrian of Utah)