BioStor
 | On the lower Silurian (Trenton) fauna of Baffin Land Charles Schuchert (1900) Proceedings of The United States National Museum 22: 143-177 |
 | Richmond faunal zones in Warren and Clinton Counties, Ohio George M Austin (1927) Proceedings of The United States National Museum 70: 1-18 |
 | The paleontology and stratigraphy of the upper Martinsburg formation of Massanutten Mountain, Virginia (1943) Journal of The Washington Academy of Sciences 33: 358-368 |
 | Some Silurian lamellibranchs from New South Wales K Sherrard (1960) Proceedings of The Linnean Society of New South Wales 84: 356-372 |