Description of Some New Fossil Shells From the Tertiary of Petersburg Virginia
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Length . 12. Breadth . 08 of an inch.
Remarks. The fold on the columeila is placed about the middle. It can scarcely be seen on a front view; but when the shell is placed obliquely, it appears very large. The mouth is acutely angular above, and rounded and somewhat effuse below. On one specimen I have observed a small impressed transverse line near the upper suture, but my other ones want it.
This little shell, though without any conspicuous characteristics, does not resemble any of our describ...ed species.
A. ANGULATITS, PL. 36. FIG. 57.
A. Testa tubulatd, inferne ovatd, crowd, imperforatd, lavi', spira attenuatd, conicd, mamillatd; suturis prof tindis ; anfrac~ tibus sex, planulatis, prope suturam inferiorem angulatis; anfraetu ultimo angulato; basi lavi; apertura parvd, subcllipticd; plied columellari obtusd, obliqua.
Shell subulate, ovate below, thick, imperforate, smooth; spire attenuate, conical, mamillate; sutures deep; whorls six, flattened, angulate near the lower suture; last whorl angular; base smooth; mouth small, sub-elliptical; ibid on the columeila obtuse, oblique.
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To quickly assess the difficulty of the text, read a short excerpt:
Length . 12. Breadth . 08 of an inch.
Remarks. The fold on the columeila is placed about the middle. It can scarcely be seen on a front view; but when the shell is placed obliquely, it appears very large. The mouth is acutely angular above, and rounded and somewhat effuse below. On one specimen I have observed a small impressed transverse line near the upper suture, but my other ones want it.
This little shell, though without any conspicuous characteristics, does not resemble any of our describ...ed species.
A. ANGULATITS, PL. 36. FIG. 57.
A. Testa tubulatd, inferne ovatd, crowd, imperforatd, lavi', spira attenuatd, conicd, mamillatd; suturis prof tindis ; anfrac~ tibus sex, planulatis, prope suturam inferiorem angulatis; anfraetu ultimo angulato; basi lavi; apertura parvd, subcllipticd; plied columellari obtusd, obliqua.
Shell subulate, ovate below, thick, imperforate, smooth; spire attenuate, conical, mamillate; sutures deep; whorls six, flattened, angulate near the lower suture; last whorl angular; base smooth; mouth small, sub-elliptical; ibid on the columeila obtuse, oblique.
What to read after Description of Some New Fossil Shells From the Tertiary of Petersburg Virginia?
You can find similar books in the "Read Also" column, or choose other free books by Henry Charles Lea to read onlineMoreLess
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