Full reference: E. Landing, G. S. Nowlan, and T. P. Fletcher. 1980. A microfauna associated with Early Cambrian trilobites of the Callavia Zone, northern Antigonish Highlands, Nova Scotia. Canadian Journal of Earth Sciences 17(3):400-418
Parent taxon: Brachiopoda according to U. Balthasar et al. 2009
Sister taxa: Acanthotretella, Clitambonoidea, Craniiformea, Ernogia, Iphidella, Lathamella, Linguliformea, Longtancunella, Rhynchonelliformea, Surindia, Tegulella, Tommotiida, Xianshanella, Disciniformea, Agastapleura, Biarea, Cornwallia, Dirinus, Jilinia, Larium, Manosia, Nekvasilovella, Neogypidula, Pomatospirella, Reflexia, Rhynchoferella, Rictia, Socraticum, Spondylobolus, Venezuelia, Virbium, Yeosinella, Yongjia, Punctospiracea
Subtaxa: Eccentrotheca guano, Eccentrotheca kanesia
Ecology: stationary low-level epifaunal suspension feeder