DIY History | Transcribe | Scholarship at Iowa | Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898 | Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 159

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Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898

Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 159

[page]158[/page]

tinctly caniculated below.
[underlined]Polyphemopsis peracuta[/underlined], Meek and Worthen.
Plate XI. figure 19.
Eulina peracuta, M. and W., 1860, Proc. Acad. Nat. Sci. Philadelphia, p.466.
Polyphemopsis peracuta, M. and W. 1866, Geol. Survey of Illinois, Vol. II. p.375.
     Shell rather large for a Polyphemopsis, acutely conical; spire greatly elevated. Volutions twelve or thirteen in number, almost or quite flat, gradually expanding from the apex to the aperture; last volution forming at least one-half of entire length of the shell, somewhat extended below, suture not well marked on upper part of shell but more distinct on lower part. Aperture narrowly sub-ovte, sharply angular above; outer lip thin sharp and nearly straight; inner lip somewhat reflexed below,

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[page]158[/page] tinctly caniculated below. [underlined]Polyphemopsis peracuta[/underlined], Meek and Worthen. Plate XI. figure 19. Eulina peracuta, M. and W., 1860, Proc. Acad. Nat. Sci. Philadelphia, p.466. Polyphemopsis peracuta, M. and W. 1866, Geol. Survey of Illinois, Vol. II. p.375. Shell rather large for a Polyphemopsis, acutely conical; spire greatly elevated. Volutions twelve or thirteen in number, almost or quite flat, gradually expanding from the apex to the aperture; last volution forming at least one-half of entire length of the shell, somewhat extended below, suture not well marked on upper part of shell but more distinct on lower part. Aperture narrowly sub-ovte, sharply angular above; outer lip thin sharp and nearly straight; inner lip somewhat reflexed below,