Polychaeta taxon details
original description
Morton, S. G. (1834). Synopsis of the organic remains of the Cretaceous Group of the United States. Philadelphia: Key & Biddle. 88 pp., 19 pls., + Appendix, 8 pp. [The Appendix is titled: Catalogue of the fossil shells of the Tertiary Formations of the United States, embracing all the species hitherto published.]., available online at https://www.biodiversitylibrary.org/page/39150465 page(s): 73, plate XV fig. 12 [details] 
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