1. Silurian paulinitid polychaetes from Gotland;Bergman;Fossils & Strata,1989
2. Polychaete jaw apparatus from the Devonian of Central Ohio;Boyer;Acta Palaeontologica Polonica,1975
3. Annelid teeth from the Lower portion of the Hamilton group and from the Naples shales of Ontario County, N. Y;Clarke;New York State Geologist, Annual Report,1887
4. Annelid jaws from the Hamilton Group of Ontario County, New York;Eller;Annals of Carnegie Museum,1934