Stromboidea

• Aporrhaidae
  • Drepanochilus
    • Drepanochilus nebrascensis (Evans & Shumard, 1854)

Original Description of Rostellaria nebrascensis by Evans & Shumard, 1854:

• "Shell elongate, conical; whorls about eight, convex, body whorl with two well rounded keels; lip prolonged transversely, terminating in a sharp point; all the volutions ornamented with transverse revolving thread-like striae, which are crossed longitudinally by prominent flexuous ribs."

Locus typicus: "Sage Creek, Nebraska" (Evans & Shumard), now South Dakota, USA

Stratum typicum: Baculites compressus zone, Pierre Shale, Maastrichtian, upper Cretaceous

History and Synonymy

1877

Anchura (Drepanocheilus) nebrascensis in Whitfield, 1877, pl. XII, fig. 2, 3

1967

Drepanochilus nebrascensis (Evans & Shumard, 1854) in Sohl, 1967, pl. 3, figs. 1-9

1974

Drepanochilus nebrascensis? in Erickson, 1974, pl. 14, fig. 14

Specimens from institutional collections

Anchura nebrascensis (Evans & Shumard, 1854); Lewis Shale, lower Maastrichtian, Cretaceous; Spring Creek - Lay section, Moffat County, Colorado, USA; Coll. Yale Peabody Museum of Natural History IP 339719

Reference:

• Erickson (1974)
• Evans, J. & Shumard, B. F. 1854. Descriptions of new fossil species from the Cretaceous formation of Sage Creek, Nebraska, collected by the North Pacific Railroad Expedition, under Gov. J. J. Stevens; Proceedings of the Academy of Natural Sciences of Philadelphia 7: 163-164, URL: https://www.biodiversitylibrary.org/page/1694276

Internet:

• Google Books