Description of the Fossils And Shells Collected in California
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, fig. 49. Ovate-acute; whorls 5 rounded, cancellated ; longitudinal strife nodulous, except towards the base of body whorl ; a deep sulcus behind the beak, two upper volutions entire ; labrum striated within ; spire conical, longer than the aperture.
Locality. San Pedro. Recent formation.
The surface of this shell is roughened by a tubercle on the longi- tudinal, at each intersection of the revolving lines.
44. X. PEDROAXA, Con. , pi. , fig. 48. Subfusiform, smooth; vo- lutions rounded, spire ...conical, longer than the aperture, which is ellip- tical ; columella very regularly concave.
Locality. Occurs with the preceding. Recent formation.
This small species resembles Nassa lunata, Say, as the preceding approximate N. Trivittata, Say. This is very remarkable, as the two latter are recent shells of the Atlantic coast, associated with each other, both in the sea and in the Miocene deposits of Virginia and Maryland.
STREPHONA, Broicne. OLIVA, Lam.
45. S. PEDROAXA, Con. , pi. , fig. 51. Small, elliptical; spire conical, about equal in length to the aperture ; base of columella with a prominent fold.
What to read after Description of the Fossils And Shells Collected in California?
You can find similar books in the "Read Also" column, or choose other free books by William P William Phipps Blake to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
, fig. 49. Ovate-acute; whorls 5 rounded, cancellated ; longitudinal strife nodulous, except towards the base of body whorl ; a deep sulcus behind the beak, two upper volutions entire ; labrum striated within ; spire conical, longer than the aperture.
Locality. San Pedro. Recent formation.
The surface of this shell is roughened by a tubercle on the longi- tudinal, at each intersection of the revolving lines.
44. X. PEDROAXA, Con. , pi. , fig. 48. Subfusiform, smooth; vo- lutions rounded, spire ...conical, longer than the aperture, which is ellip- tical ; columella very regularly concave.
Locality. Occurs with the preceding. Recent formation.
This small species resembles Nassa lunata, Say, as the preceding approximate N. Trivittata, Say. This is very remarkable, as the two latter are recent shells of the Atlantic coast, associated with each other, both in the sea and in the Miocene deposits of Virginia and Maryland.
STREPHONA, Broicne. OLIVA, Lam.
45. S. PEDROAXA, Con. , pi. , fig. 51. Small, elliptical; spire conical, about equal in length to the aperture ; base of columella with a prominent fold.
What to read after Description of the Fossils And Shells Collected in California?
You can find similar books in the "Read Also" column, or choose other free books by William P William Phipps Blake to read onlineMoreLess
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