20 pages matching postnuclear whorls in this book
Results 1-3 of 20
What people are saying - Write a review
We haven't found any reviews in the usual places.
Aclis Albatross at station angulated Aperture oval axial and spiral axial ribs Base moderately long Base short Base well rounded batross BERMUDACLIS bermudensis blunt apex bottom temperature broken coral bottom broken shell bottom callus columella contains 1 specimen diameter elongate-ovate elongate-turreted Fernandina figure forms a blunt genus Graphis gray sand Hawk at station Hemiaclis hendersoni HENRYA hyalina incremental lines inner lip thin Jeffreys last whorl Length malleated marked by incremental Martha's Vineyard milk white mollusk narrowly umbilicated Nuclear whorls nucleata nucleus consists openly umbilicated operculum outer lip thin ovate patulous postnuclear whorls Proc readily distinguish Rissoa San Salvador sand and broken Sand Key sarissa Schwengelia Shell minute Shell small shoulder slender slightly reflected smooth turn species Plate specimen dredged spiral cords spiral sculpture spiral threads spire Stilbe strongly rounded Suture strongly constricted topotypes turn which forms U. S. Nat umbilicus unica well-rounded whorls and measures