Descriptions of new species of Carboniferous invertebrate fossilsDOI: info:10.5479/si.00963801.2-86.252v. 2No. 86252–260, 1 pl.
White, C. A. 1880. "Descriptions of new species of Carboniferous invertebrate fossils." Proceedings of the United States National Museum, 2, (86) 252–260, 1 pl.. https://doi.org/10.5479/si.00963801.2-86.252.