Stromboidea
Original Description of Anchura? forresteri Reeside, 1928, p. 310:
- "The scar of attachment of a large lower valve of Exogyra olisiponensis Sharpe var. oxyntas Coquand, from the basal part of the beds of Colorado age at Black Bluff, Utah, constitutes a fairly sharp mould of a gastropod not at present known by any other specimen. Parts of three whorls and the exterior of much of a wing-like extension of the outer lip are shown. The species is high-spired, the volutions of the spire moderately convex with numerous longitudnal, somewhat inclined, rounded ribs and only faintly visible spiral sculpture. The body-whorl shows both axial and spiral sculpture and is cancellated. The expanded outer lip bears a distinct, rounded keel, curved posteriorly into a sharp tip of the wing. The suture of the body whorl near the outer lip extends posteriorly across the precending whorl but there is no clear evidence in the specimen of a posterior extension of the lip along the spire."
Comment Reeside, 1928, p.
- "The writer knows no American species very close to Anchura? forrsteri and though the type is somewhat indefinite believes it worthy of a name. It is best characterized by the size, the form of the extension of the outer lip, and the sculpture. It is strikingly like Aporrhais ("Chenopus") olisiponensis Choffat from the lower Turonian of Portugal, though on the basis of the single specimen available it seems better to keep the two under separate names. It is difficult to tell from either Coffat's figures or the present specimen whether the two species belong to Anchura or Aporrhais, though they are in some respects more like certain species definitely assignable to Anchura. The type is in the U.S. National Museum (Cat. No. 73459)."
Anchura? forresteri Reeside, 1928, fig. 19
References
- Reeside, J.B. jr. 1928. Five new species of Cretaceous mollusks from Colorado and Utah; Journal of the Washington Academy of Sciences, 18(11), p. 306-313
